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Finding the Fourth Proportional to 61,310.76, 91,891.92 and 43,513.44

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Solution

The fourth proportional to 61,310.76, 91,891.92 and 43,513.44 is: 65,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,310.76 : 91,891.92 = 43,513.44 : x
  2. Step 2: Convert to fraction form
    61,310.76/91,891.92 = 43,513.44/x
  3. Step 3: Cross multiply
    61,310.76x = 91,891.92 × 43,513.44
  4. Step 4: Simplify right side
    61,310.76x = 3,998,533,547.40
  5. Step 5: Solve for x
    x = 3,998,533,547.40/61,310.76
  6. Step 6: Final answer
    x = 65,217.48

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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.