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Finding the Fourth Proportional to 12,290,216.40, 17,231,497.20 and 12,290,216.40

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Solution

The fourth proportional to 12,290,216.40, 17,231,497.20 and 12,290,216.40 is: 17,231,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,216.40 : 17,231,497.20 = 12,290,216.40 : x
  2. Step 2: Convert to fraction form
    12,290,216.40/17,231,497.20 = 12,290,216.40/x
  3. Step 3: Cross multiply
    12,290,216.40x = 17,231,497.20 × 12,290,216.40
  4. Step 4: Simplify right side
    12,290,216.40x = 211,778,829,483,994.06
  5. Step 5: Solve for x
    x = 211,778,829,483,994.06/12,290,216.40
  6. Step 6: Final answer
    x = 17,231,497.20

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.