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Finding the Fourth Proportional to 71,792.14, 99,069.26 and 39,520.48

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Solution

The fourth proportional to 71,792.14, 99,069.26 and 39,520.48 is: 54,536.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,792.14 : 99,069.26 = 39,520.48 : x
  2. Step 2: Convert to fraction form
    71,792.14/99,069.26 = 39,520.48/x
  3. Step 3: Cross multiply
    71,792.14x = 99,069.26 × 39,520.48
  4. Step 4: Simplify right side
    71,792.14x = 3,915,264,708.44
  5. Step 5: Solve for x
    x = 3,915,264,708.44/71,792.14
  6. Step 6: Final answer
    x = 54,536.12

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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.