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Finding the Fourth Proportional to 80,957.43, 111,729.29 and 60,503.97

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Solution

The fourth proportional to 80,957.43, 111,729.29 and 60,503.97 is: 83,501.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,957.43 : 111,729.29 = 60,503.97 : x
  2. Step 2: Convert to fraction form
    80,957.43/111,729.29 = 60,503.97/x
  3. Step 3: Cross multiply
    80,957.43x = 111,729.29 × 60,503.97
  4. Step 4: Simplify right side
    80,957.43x = 6,760,065,307.76
  5. Step 5: Solve for x
    x = 6,760,065,307.76/80,957.43
  6. Step 6: Final answer
    x = 83,501.48

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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.