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Finding the Fourth Proportional to 98,620.70, 147,639.45 and 88,123.10

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Solution

The fourth proportional to 98,620.70, 147,639.45 and 88,123.10 is: 131,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,620.70 : 147,639.45 = 88,123.10 : x
  2. Step 2: Convert to fraction form
    98,620.70/147,639.45 = 88,123.10/x
  3. Step 3: Cross multiply
    98,620.70x = 147,639.45 × 88,123.10
  4. Step 4: Simplify right side
    98,620.70x = 13,010,446,016.30
  5. Step 5: Solve for x
    x = 13,010,446,016.30/98,620.70
  6. Step 6: Final answer
    x = 131,924.09

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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.