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Finding the Fourth Proportional to 99,013.70, 148,520.55 and 57,023.30

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Solution

The fourth proportional to 99,013.70, 148,520.55 and 57,023.30 is: 85,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,013.70 : 148,520.55 = 57,023.30 : x
  2. Step 2: Convert to fraction form
    99,013.70/148,520.55 = 57,023.30/x
  3. Step 3: Cross multiply
    99,013.70x = 148,520.55 × 57,023.30
  4. Step 4: Simplify right side
    99,013.70x = 8,469,131,878.82
  5. Step 5: Solve for x
    x = 8,469,131,878.82/99,013.70
  6. Step 6: Final answer
    x = 85,534.95

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1.5x scale

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.