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Finding the Fourth Proportional to 98,881.92, 148,347.18 and 28,761.84

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Solution

The fourth proportional to 98,881.92, 148,347.18 and 28,761.84 is: 43,149.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,881.92 : 148,347.18 = 28,761.84 : x
  2. Step 2: Convert to fraction form
    98,881.92/148,347.18 = 28,761.84/x
  3. Step 3: Cross multiply
    98,881.92x = 148,347.18 × 28,761.84
  4. Step 4: Simplify right side
    98,881.92x = 4,266,737,855.61
  5. Step 5: Solve for x
    x = 4,266,737,855.61/98,881.92
  6. Step 6: Final answer
    x = 43,149.83

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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.