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Finding the Fourth Proportional to 125,248.86, 187,954.74 and 54,240.84

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Solution

The fourth proportional to 125,248.86, 187,954.74 and 54,240.84 is: 81,396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,248.86 : 187,954.74 = 54,240.84 : x
  2. Step 2: Convert to fraction form
    125,248.86/187,954.74 = 54,240.84/x
  3. Step 3: Cross multiply
    125,248.86x = 187,954.74 × 54,240.84
  4. Step 4: Simplify right side
    125,248.86x = 10,194,822,979.58
  5. Step 5: Solve for x
    x = 10,194,822,979.58/125,248.86
  6. Step 6: Final answer
    x = 81,396.53

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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.