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Finding the Fourth Proportional to 94,205.54, 140,695.17 and 84,407.78

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Solution

The fourth proportional to 94,205.54, 140,695.17 and 84,407.78 is: 126,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,205.54 : 140,695.17 = 84,407.78 : x
  2. Step 2: Convert to fraction form
    94,205.54/140,695.17 = 84,407.78/x
  3. Step 3: Cross multiply
    94,205.54x = 140,695.17 × 84,407.78
  4. Step 4: Simplify right side
    94,205.54x = 11,875,766,534.38
  5. Step 5: Solve for x
    x = 11,875,766,534.38/94,205.54
  6. Step 6: Final answer
    x = 126,062.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.