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Finding the Fourth Proportional to 124,725.83, 186,972.11 and 45,818.87

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Solution

The fourth proportional to 124,725.83, 186,972.11 and 45,818.87 is: 68,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,725.83 : 186,972.11 = 45,818.87 : x
  2. Step 2: Convert to fraction form
    124,725.83/186,972.11 = 45,818.87/x
  3. Step 3: Cross multiply
    124,725.83x = 186,972.11 × 45,818.87
  4. Step 4: Simplify right side
    124,725.83x = 8,566,850,572.62
  5. Step 5: Solve for x
    x = 8,566,850,572.62/124,725.83
  6. Step 6: Final answer
    x = 68,685.46

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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.