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Finding the Fourth Proportional to 66,590.28, 91,854.52 and 43,921.24

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Solution

The fourth proportional to 66,590.28, 91,854.52 and 43,921.24 is: 60,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,590.28 : 91,854.52 = 43,921.24 : x
  2. Step 2: Convert to fraction form
    66,590.28/91,854.52 = 43,921.24/x
  3. Step 3: Cross multiply
    66,590.28x = 91,854.52 × 43,921.24
  4. Step 4: Simplify right side
    66,590.28x = 4,034,364,418.00
  5. Step 5: Solve for x
    x = 4,034,364,418.00/66,590.28
  6. Step 6: Final answer
    x = 60,584.88

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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.