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Finding the Fourth Proportional to 576,419.11, 865,156.01 and 292,305.76

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Solution

The fourth proportional to 576,419.11, 865,156.01 and 292,305.76 is: 438,726.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,419.11 : 865,156.01 = 292,305.76 : x
  2. Step 2: Convert to fraction form
    576,419.11/865,156.01 = 292,305.76/x
  3. Step 3: Cross multiply
    576,419.11x = 865,156.01 × 292,305.76
  4. Step 4: Simplify right side
    576,419.11x = 252,890,081,397.20
  5. Step 5: Solve for x
    x = 252,890,081,397.20/576,419.11
  6. Step 6: Final answer
    x = 438,726.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.