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Finding the Fourth Proportional to 71,062.29, 106,593.42 and 21,143.10

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Solution

The fourth proportional to 71,062.29, 106,593.42 and 21,143.10 is: 31,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,062.29 : 106,593.42 = 21,143.10 : x
  2. Step 2: Convert to fraction form
    71,062.29/106,593.42 = 21,143.10/x
  3. Step 3: Cross multiply
    71,062.29x = 106,593.42 × 21,143.10
  4. Step 4: Simplify right side
    71,062.29x = 2,253,715,338.40
  5. Step 5: Solve for x
    x = 2,253,715,338.40/71,062.29
  6. Step 6: Final answer
    x = 31,714.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.