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Finding the Fourth Proportional to 14,572.20, 20,459.40 and 14,572.20

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Solution

The fourth proportional to 14,572.20, 20,459.40 and 14,572.20 is: 20,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,572.20 : 20,459.40 = 14,572.20 : x
  2. Step 2: Convert to fraction form
    14,572.20/20,459.40 = 14,572.20/x
  3. Step 3: Cross multiply
    14,572.20x = 20,459.40 × 14,572.20
  4. Step 4: Simplify right side
    14,572.20x = 298,138,468.68
  5. Step 5: Solve for x
    x = 298,138,468.68/14,572.20
  6. Step 6: Final answer
    x = 20,459.40

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Half scale
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Double scale
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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.