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Finding the Fourth Proportional to 92,616.60, 138,871.26 and 81,545.52

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Solution

The fourth proportional to 92,616.60, 138,871.26 and 81,545.52 is: 122,271.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,616.60 : 138,871.26 = 81,545.52 : x
  2. Step 2: Convert to fraction form
    92,616.60/138,871.26 = 81,545.52/x
  3. Step 3: Cross multiply
    92,616.60x = 138,871.26 × 81,545.52
  4. Step 4: Simplify right side
    92,616.60x = 11,324,329,109.76
  5. Step 5: Solve for x
    x = 11,324,329,109.76/92,616.60
  6. Step 6: Final answer
    x = 122,271.05

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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.