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Finding the Fourth Proportional to 99,332.80, 148,999.20 and 92,723.20

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Solution

The fourth proportional to 99,332.80, 148,999.20 and 92,723.20 is: 139,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,332.80 : 148,999.20 = 92,723.20 : x
  2. Step 2: Convert to fraction form
    99,332.80/148,999.20 = 92,723.20/x
  3. Step 3: Cross multiply
    99,332.80x = 148,999.20 × 92,723.20
  4. Step 4: Simplify right side
    99,332.80x = 13,815,682,621.44
  5. Step 5: Solve for x
    x = 13,815,682,621.44/99,332.80
  6. Step 6: Final answer
    x = 139,084.80

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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.