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Finding the Fourth Proportional to 159,780.76, 239,671.14 and 54,600.64

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Solution

The fourth proportional to 159,780.76, 239,671.14 and 54,600.64 is: 81,900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,780.76 : 239,671.14 = 54,600.64 : x
  2. Step 2: Convert to fraction form
    159,780.76/239,671.14 = 54,600.64/x
  3. Step 3: Cross multiply
    159,780.76x = 239,671.14 × 54,600.64
  4. Step 4: Simplify right side
    159,780.76x = 13,086,197,633.53
  5. Step 5: Solve for x
    x = 13,086,197,633.53/159,780.76
  6. Step 6: Final answer
    x = 81,900.96

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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.