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Finding the Fourth Proportional to 61,387.12, 91,880.88 and 34,324.81

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Solution

The fourth proportional to 61,387.12, 91,880.88 and 34,324.81 is: 51,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,387.12 : 91,880.88 = 34,324.81 : x
  2. Step 2: Convert to fraction form
    61,387.12/91,880.88 = 34,324.81/x
  3. Step 3: Cross multiply
    61,387.12x = 91,880.88 × 34,324.81
  4. Step 4: Simplify right side
    61,387.12x = 3,153,794,100.12
  5. Step 5: Solve for x
    x = 3,153,794,100.12/61,387.12
  6. Step 6: Final answer
    x = 51,375.51

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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.