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Finding the Fourth Proportional to 60,749.52, 91,063.80 and 42,242.64

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Solution

The fourth proportional to 60,749.52, 91,063.80 and 42,242.64 is: 63,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,749.52 : 91,063.80 = 42,242.64 : x
  2. Step 2: Convert to fraction form
    60,749.52/91,063.80 = 42,242.64/x
  3. Step 3: Cross multiply
    60,749.52x = 91,063.80 × 42,242.64
  4. Step 4: Simplify right side
    60,749.52x = 3,846,775,320.43
  5. Step 5: Solve for x
    x = 3,846,775,320.43/60,749.52
  6. Step 6: Final answer
    x = 63,321.90

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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.