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Finding the Fourth Proportional to 61,007.64, 91,105.46 and 60,347.90

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Solution

The fourth proportional to 61,007.64, 91,105.46 and 60,347.90 is: 90,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,007.64 : 91,105.46 = 60,347.90 : x
  2. Step 2: Convert to fraction form
    61,007.64/91,105.46 = 60,347.90/x
  3. Step 3: Cross multiply
    61,007.64x = 91,105.46 × 60,347.90
  4. Step 4: Simplify right side
    61,007.64x = 5,498,023,189.53
  5. Step 5: Solve for x
    x = 5,498,023,189.53/61,007.64
  6. Step 6: Final answer
    x = 90,120.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.