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Finding the Fourth Proportional to 66,406.80, 99,610.20 and 24,286.80

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Solution

The fourth proportional to 66,406.80, 99,610.20 and 24,286.80 is: 36,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,406.80 : 99,610.20 = 24,286.80 : x
  2. Step 2: Convert to fraction form
    66,406.80/99,610.20 = 24,286.80/x
  3. Step 3: Cross multiply
    66,406.80x = 99,610.20 × 24,286.80
  4. Step 4: Simplify right side
    66,406.80x = 2,419,213,005.36
  5. Step 5: Solve for x
    x = 2,419,213,005.36/66,406.80
  6. Step 6: Final answer
    x = 36,430.20

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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.