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Finding the Fourth Proportional to 257,167.29, 385,776.31 and 88,665.44

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Solution

The fourth proportional to 257,167.29, 385,776.31 and 88,665.44 is: 133,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,167.29 : 385,776.31 = 88,665.44 : x
  2. Step 2: Convert to fraction form
    257,167.29/385,776.31 = 88,665.44/x
  3. Step 3: Cross multiply
    257,167.29x = 385,776.31 × 88,665.44
  4. Step 4: Simplify right side
    257,167.29x = 34,205,024,117.18
  5. Step 5: Solve for x
    x = 34,205,024,117.18/257,167.29
  6. Step 6: Final answer
    x = 133,006.90

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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.