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Finding the Fourth Proportional to 66,379.52, 91,542.20 and 48,446.12

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Solution

The fourth proportional to 66,379.52, 91,542.20 and 48,446.12 is: 66,810.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.52 : 91,542.20 = 48,446.12 : x
  2. Step 2: Convert to fraction form
    66,379.52/91,542.20 = 48,446.12/x
  3. Step 3: Cross multiply
    66,379.52x = 91,542.20 × 48,446.12
  4. Step 4: Simplify right side
    66,379.52x = 4,434,864,406.26
  5. Step 5: Solve for x
    x = 4,434,864,406.26/66,379.52
  6. Step 6: Final answer
    x = 66,810.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.