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Finding the Fourth Proportional to 187,909.98, 281,862.54 and 45,755.52

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Solution

The fourth proportional to 187,909.98, 281,862.54 and 45,755.52 is: 68,632.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,909.98 : 281,862.54 = 45,755.52 : x
  2. Step 2: Convert to fraction form
    187,909.98/281,862.54 = 45,755.52/x
  3. Step 3: Cross multiply
    187,909.98x = 281,862.54 × 45,755.52
  4. Step 4: Simplify right side
    187,909.98x = 12,896,767,086.22
  5. Step 5: Solve for x
    x = 12,896,767,086.22/187,909.98
  6. Step 6: Final answer
    x = 68,632.69

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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.