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Finding the Fourth Proportional to 99,815.80, 149,723.70 and 93,910.90

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Solution

The fourth proportional to 99,815.80, 149,723.70 and 93,910.90 is: 140,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815.80 : 149,723.70 = 93,910.90 : x
  2. Step 2: Convert to fraction form
    99,815.80/149,723.70 = 93,910.90/x
  3. Step 3: Cross multiply
    99,815.80x = 149,723.70 × 93,910.90
  4. Step 4: Simplify right side
    99,815.80x = 14,060,687,418.33
  5. Step 5: Solve for x
    x = 14,060,687,418.33/99,815.80
  6. Step 6: Final answer
    x = 140,866.35

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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.