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Finding the Fourth Proportional to 391,044.38, 539,641.24 and 212,196.38

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Solution

The fourth proportional to 391,044.38, 539,641.24 and 212,196.38 is: 292,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,044.38 : 539,641.24 = 212,196.38 : x
  2. Step 2: Convert to fraction form
    391,044.38/539,641.24 = 212,196.38/x
  3. Step 3: Cross multiply
    391,044.38x = 539,641.24 × 212,196.38
  4. Step 4: Simplify right side
    391,044.38x = 114,509,914,398.01
  5. Step 5: Solve for x
    x = 114,509,914,398.01/391,044.38
  6. Step 6: Final answer
    x = 292,831.00

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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.