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Finding the Fourth Proportional to 415,681.40, 573,640.50 and 224,694.79

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Solution

The fourth proportional to 415,681.40, 573,640.50 and 224,694.79 is: 310,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,681.40 : 573,640.50 = 224,694.79 : x
  2. Step 2: Convert to fraction form
    415,681.40/573,640.50 = 224,694.79/x
  3. Step 3: Cross multiply
    415,681.40x = 573,640.50 × 224,694.79
  4. Step 4: Simplify right side
    415,681.40x = 128,894,027,691.32
  5. Step 5: Solve for x
    x = 128,894,027,691.32/415,681.40
  6. Step 6: Final answer
    x = 310,078.90

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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.