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Finding the Fourth Proportional to 125,305.74, 187,970.49 and 45,363.87

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Solution

The fourth proportional to 125,305.74, 187,970.49 and 45,363.87 is: 68,050.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,305.74 : 187,970.49 = 45,363.87 : x
  2. Step 2: Convert to fraction form
    125,305.74/187,970.49 = 45,363.87/x
  3. Step 3: Cross multiply
    125,305.74x = 187,970.49 × 45,363.87
  4. Step 4: Simplify right side
    125,305.74x = 8,527,068,872.20
  5. Step 5: Solve for x
    x = 8,527,068,872.20/125,305.74
  6. Step 6: Final answer
    x = 68,050.11

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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.