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Finding the Fourth Proportional to 98,972.70, 148,361.85 and 88,475.10

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Solution

The fourth proportional to 98,972.70, 148,361.85 and 88,475.10 is: 132,625.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,972.70 : 148,361.85 = 88,475.10 : x
  2. Step 2: Convert to fraction form
    98,972.70/148,361.85 = 88,475.10/x
  3. Step 3: Cross multiply
    98,972.70x = 148,361.85 × 88,475.10
  4. Step 4: Simplify right side
    98,972.70x = 13,126,329,514.94
  5. Step 5: Solve for x
    x = 13,126,329,514.94/98,972.70
  6. Step 6: Final answer
    x = 132,625.76

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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.