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Finding the Fourth Proportional to 92,715.90, 138,294.42 and 84,201.98

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Solution

The fourth proportional to 92,715.90, 138,294.42 and 84,201.98 is: 125,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,715.90 : 138,294.42 = 84,201.98 : x
  2. Step 2: Convert to fraction form
    92,715.90/138,294.42 = 84,201.98/x
  3. Step 3: Cross multiply
    92,715.90x = 138,294.42 × 84,201.98
  4. Step 4: Simplify right side
    92,715.90x = 11,644,663,295.48
  5. Step 5: Solve for x
    x = 11,644,663,295.48/92,715.90
  6. Step 6: Final answer
    x = 125,595.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.