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Finding the Fourth Proportional to 98,600.80, 136,298.96 and 87,951.22

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Solution

The fourth proportional to 98,600.80, 136,298.96 and 87,951.22 is: 121,577.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,600.80 : 136,298.96 = 87,951.22 : x
  2. Step 2: Convert to fraction form
    98,600.80/136,298.96 = 87,951.22/x
  3. Step 3: Cross multiply
    98,600.80x = 136,298.96 × 87,951.22
  4. Step 4: Simplify right side
    98,600.80x = 11,987,659,816.73
  5. Step 5: Solve for x
    x = 11,987,659,816.73/98,600.80
  6. Step 6: Final answer
    x = 121,577.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.