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Finding the Fourth Proportional to 82,116.80, 113,312.70 and 60,617.97

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Solution

The fourth proportional to 82,116.80, 113,312.70 and 60,617.97 is: 83,646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,116.80 : 113,312.70 = 60,617.97 : x
  2. Step 2: Convert to fraction form
    82,116.80/113,312.70 = 60,617.97/x
  3. Step 3: Cross multiply
    82,116.80x = 113,312.70 × 60,617.97
  4. Step 4: Simplify right side
    82,116.80x = 6,868,785,849.22
  5. Step 5: Solve for x
    x = 6,868,785,849.22/82,116.80
  6. Step 6: Final answer
    x = 83,646.54

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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.