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Finding the Fourth Proportional to 187,414.76, 281,121.90 and 61,054.80

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Solution

The fourth proportional to 187,414.76, 281,121.90 and 61,054.80 is: 91,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,414.76 : 281,121.90 = 61,054.80 : x
  2. Step 2: Convert to fraction form
    187,414.76/281,121.90 = 61,054.80/x
  3. Step 3: Cross multiply
    187,414.76x = 281,121.90 × 61,054.80
  4. Step 4: Simplify right side
    187,414.76x = 17,163,841,380.12
  5. Step 5: Solve for x
    x = 17,163,841,380.12/187,414.76
  6. Step 6: Final answer
    x = 91,582.12

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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.