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Finding the Fourth Proportional to 78,525.67, 108,340.98 and 44,531.49

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Solution

The fourth proportional to 78,525.67, 108,340.98 and 44,531.49 is: 61,439.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,525.67 : 108,340.98 = 44,531.49 : x
  2. Step 2: Convert to fraction form
    78,525.67/108,340.98 = 44,531.49/x
  3. Step 3: Cross multiply
    78,525.67x = 108,340.98 × 44,531.49
  4. Step 4: Simplify right side
    78,525.67x = 4,824,585,044.80
  5. Step 5: Solve for x
    x = 4,824,585,044.80/78,525.67
  6. Step 6: Final answer
    x = 61,439.59

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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.