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Finding the Fourth Proportional to 99,344.80, 149,017.20 and 25,472.80

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Solution

The fourth proportional to 99,344.80, 149,017.20 and 25,472.80 is: 38,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,344.80 : 149,017.20 = 25,472.80 : x
  2. Step 2: Convert to fraction form
    99,344.80/149,017.20 = 25,472.80/x
  3. Step 3: Cross multiply
    99,344.80x = 149,017.20 × 25,472.80
  4. Step 4: Simplify right side
    99,344.80x = 3,795,885,332.16
  5. Step 5: Solve for x
    x = 3,795,885,332.16/99,344.80
  6. Step 6: Final answer
    x = 38,209.20

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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.