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Finding the Fourth Proportional to 676,638.56, 933,761.22 and 404,717.92

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Solution

The fourth proportional to 676,638.56, 933,761.22 and 404,717.92 is: 558,510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,638.56 : 933,761.22 = 404,717.92 : x
  2. Step 2: Convert to fraction form
    676,638.56/933,761.22 = 404,717.92/x
  3. Step 3: Cross multiply
    676,638.56x = 933,761.22 × 404,717.92
  4. Step 4: Simplify right side
    676,638.56x = 377,909,894,882.97
  5. Step 5: Solve for x
    x = 377,909,894,882.97/676,638.56
  6. Step 6: Final answer
    x = 558,510.73

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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.