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Finding the Fourth Proportional to 148,969.76, 205,555.16 and 88,517.92

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Solution

The fourth proportional to 148,969.76, 205,555.16 and 88,517.92 is: 122,141.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,969.76 : 205,555.16 = 88,517.92 : x
  2. Step 2: Convert to fraction form
    148,969.76/205,555.16 = 88,517.92/x
  3. Step 3: Cross multiply
    148,969.76x = 205,555.16 × 88,517.92
  4. Step 4: Simplify right side
    148,969.76x = 18,195,315,208.47
  5. Step 5: Solve for x
    x = 18,195,315,208.47/148,969.76
  6. Step 6: Final answer
    x = 122,141.00

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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.