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Finding the Fourth Proportional to 98,770.92, 148,239.45 and 92,543.10

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Solution

The fourth proportional to 98,770.92, 148,239.45 and 92,543.10 is: 138,892.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,770.92 : 148,239.45 = 92,543.10 : x
  2. Step 2: Convert to fraction form
    98,770.92/148,239.45 = 92,543.10/x
  3. Step 3: Cross multiply
    98,770.92x = 148,239.45 × 92,543.10
  4. Step 4: Simplify right side
    98,770.92x = 13,718,538,245.30
  5. Step 5: Solve for x
    x = 13,718,538,245.30/98,770.92
  6. Step 6: Final answer
    x = 138,892.48

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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.