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Finding the Fourth Proportional to 514,892.18, 710,593.16 and 285,521.39

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Solution

The fourth proportional to 514,892.18, 710,593.16 and 285,521.39 is: 394,042.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,892.18 : 710,593.16 = 285,521.39 : x
  2. Step 2: Convert to fraction form
    514,892.18/710,593.16 = 285,521.39/x
  3. Step 3: Cross multiply
    514,892.18x = 710,593.16 × 285,521.39
  4. Step 4: Simplify right side
    514,892.18x = 202,889,546,767.69
  5. Step 5: Solve for x
    x = 202,889,546,767.69/514,892.18
  6. Step 6: Final answer
    x = 394,042.78

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Double scale
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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.