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Finding the Fourth Proportional to 125,149.87, 187,725.44 and 31,655.71

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Solution

The fourth proportional to 125,149.87, 187,725.44 and 31,655.71 is: 47,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,149.87 : 187,725.44 = 31,655.71 : x
  2. Step 2: Convert to fraction form
    125,149.87/187,725.44 = 31,655.71/x
  3. Step 3: Cross multiply
    125,149.87x = 187,725.44 × 31,655.71
  4. Step 4: Simplify right side
    125,149.87x = 5,942,582,088.26
  5. Step 5: Solve for x
    x = 5,942,582,088.26/125,149.87
  6. Step 6: Final answer
    x = 47,483.73

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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.