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Finding the Fourth Proportional to 78,545.97, 108,395.28 and 44,556.75

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Solution

The fourth proportional to 78,545.97, 108,395.28 and 44,556.75 is: 61,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,545.97 : 108,395.28 = 44,556.75 : x
  2. Step 2: Convert to fraction form
    78,545.97/108,395.28 = 44,556.75/x
  3. Step 3: Cross multiply
    78,545.97x = 108,395.28 × 44,556.75
  4. Step 4: Simplify right side
    78,545.97x = 4,829,741,392.14
  5. Step 5: Solve for x
    x = 4,829,741,392.14/78,545.97
  6. Step 6: Final answer
    x = 61,489.36

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1.5x scale

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.