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Finding the Fourth Proportional to 83,578.80, 125,280.16 and 27,404.28

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Solution

The fourth proportional to 83,578.80, 125,280.16 and 27,404.28 is: 41,077.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,578.80 : 125,280.16 = 27,404.28 : x
  2. Step 2: Convert to fraction form
    83,578.80/125,280.16 = 27,404.28/x
  3. Step 3: Cross multiply
    83,578.80x = 125,280.16 × 27,404.28
  4. Step 4: Simplify right side
    83,578.80x = 3,433,212,583.08
  5. Step 5: Solve for x
    x = 3,433,212,583.08/83,578.80
  6. Step 6: Final answer
    x = 41,077.55

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1.5x scale

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.