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Finding the Fourth Proportional to 873,522.92, 1,205,363.92 and 491,681

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Solution

The fourth proportional to 873,522.92, 1,205,363.92 and 491,681 is: 678,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,522.92 : 1,205,363.92 = 491,681 : x
  2. Step 2: Convert to fraction form
    873,522.92/1,205,363.92 = 491,681/x
  3. Step 3: Cross multiply
    873,522.92x = 1,205,363.92 × 491,681
  4. Step 4: Simplify right side
    873,522.92x = 592,654,537,549.52
  5. Step 5: Solve for x
    x = 592,654,537,549.52/873,522.92
  6. Step 6: Final answer
    x = 678,464.78

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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.