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Finding the Fourth Proportional to 78,757.68, 108,681.48 and 44,761.62

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Solution

The fourth proportional to 78,757.68, 108,681.48 and 44,761.62 is: 61,768.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,757.68 : 108,681.48 = 44,761.62 : x
  2. Step 2: Convert to fraction form
    78,757.68/108,681.48 = 44,761.62/x
  3. Step 3: Cross multiply
    78,757.68x = 108,681.48 × 44,761.62
  4. Step 4: Simplify right side
    78,757.68x = 4,864,759,108.80
  5. Step 5: Solve for x
    x = 4,864,759,108.80/78,757.68
  6. Step 6: Final answer
    x = 61,768.69

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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.