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Finding the Fourth Proportional to 12,482.15, 17,225.10 and 6,816.68

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Solution

The fourth proportional to 12,482.15, 17,225.10 and 6,816.68 is: 9,406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.15 : 17,225.10 = 6,816.68 : x
  2. Step 2: Convert to fraction form
    12,482.15/17,225.10 = 6,816.68/x
  3. Step 3: Cross multiply
    12,482.15x = 17,225.10 × 6,816.68
  4. Step 4: Simplify right side
    12,482.15x = 117,417,994.67
  5. Step 5: Solve for x
    x = 117,417,994.67/12,482.15
  6. Step 6: Final answer
    x = 9,406.87

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.