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Finding the Fourth Proportional to 83,762.56, 115,473.36 and 66,616.48

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Solution

The fourth proportional to 83,762.56, 115,473.36 and 66,616.48 is: 91,836.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,762.56 : 115,473.36 = 66,616.48 : x
  2. Step 2: Convert to fraction form
    83,762.56/115,473.36 = 66,616.48/x
  3. Step 3: Cross multiply
    83,762.56x = 115,473.36 × 66,616.48
  4. Step 4: Simplify right side
    83,762.56x = 7,692,428,776.97
  5. Step 5: Solve for x
    x = 7,692,428,776.97/83,762.56
  6. Step 6: Final answer
    x = 91,836.12

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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.