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Finding the Fourth Proportional to 617,345.89, 930,645.92 and 576,196.13

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Solution

The fourth proportional to 617,345.89, 930,645.92 and 576,196.13 is: 868,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,345.89 : 930,645.92 = 576,196.13 : x
  2. Step 2: Convert to fraction form
    617,345.89/930,645.92 = 576,196.13/x
  3. Step 3: Cross multiply
    617,345.89x = 930,645.92 × 576,196.13
  4. Step 4: Simplify right side
    617,345.89x = 536,234,581,271.40
  5. Step 5: Solve for x
    x = 536,234,581,271.40/617,345.89
  6. Step 6: Final answer
    x = 868,612.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.