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Finding the Fourth Proportional to 99,332.80, 148,999.20 and 82,711.60

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Solution

The fourth proportional to 99,332.80, 148,999.20 and 82,711.60 is: 124,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,332.80 : 148,999.20 = 82,711.60 : x
  2. Step 2: Convert to fraction form
    99,332.80/148,999.20 = 82,711.60/x
  3. Step 3: Cross multiply
    99,332.80x = 148,999.20 × 82,711.60
  4. Step 4: Simplify right side
    99,332.80x = 12,323,962,230.72
  5. Step 5: Solve for x
    x = 12,323,962,230.72/99,332.80
  6. Step 6: Final answer
    x = 124,067.40

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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.