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Finding the Fourth Proportional to 66,242.88, 91,419.84 and 37,955.52

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Solution

The fourth proportional to 66,242.88, 91,419.84 and 37,955.52 is: 52,381.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,242.88 : 91,419.84 = 37,955.52 : x
  2. Step 2: Convert to fraction form
    66,242.88/91,419.84 = 37,955.52/x
  3. Step 3: Cross multiply
    66,242.88x = 91,419.84 × 37,955.52
  4. Step 4: Simplify right side
    66,242.88x = 3,469,887,565.52
  5. Step 5: Solve for x
    x = 3,469,887,565.52/66,242.88
  6. Step 6: Final answer
    x = 52,381.29

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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.