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Finding the Fourth Proportional to 144,710.76, 216,891.18 and 74,551.80

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Solution

The fourth proportional to 144,710.76, 216,891.18 and 74,551.80 is: 111,737.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,710.76 : 216,891.18 = 74,551.80 : x
  2. Step 2: Convert to fraction form
    144,710.76/216,891.18 = 74,551.80/x
  3. Step 3: Cross multiply
    144,710.76x = 216,891.18 × 74,551.80
  4. Step 4: Simplify right side
    144,710.76x = 16,169,627,873.12
  5. Step 5: Solve for x
    x = 16,169,627,873.12/144,710.76
  6. Step 6: Final answer
    x = 111,737.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.