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Finding the Fourth Proportional to 98,379.92, 147,591.76 and 28,253.84

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Solution

The fourth proportional to 98,379.92, 147,591.76 and 28,253.84 is: 42,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,379.92 : 147,591.76 = 28,253.84 : x
  2. Step 2: Convert to fraction form
    98,379.92/147,591.76 = 28,253.84/x
  3. Step 3: Cross multiply
    98,379.92x = 147,591.76 × 28,253.84
  4. Step 4: Simplify right side
    98,379.92x = 4,170,033,972.36
  5. Step 5: Solve for x
    x = 4,170,033,972.36/98,379.92
  6. Step 6: Final answer
    x = 42,387.04

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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.