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Finding the Fourth Proportional to 160,544.70, 240,965.13 and 81,715.74

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Solution

The fourth proportional to 160,544.70, 240,965.13 and 81,715.74 is: 122,648.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,544.70 : 240,965.13 = 81,715.74 : x
  2. Step 2: Convert to fraction form
    160,544.70/240,965.13 = 81,715.74/x
  3. Step 3: Cross multiply
    160,544.70x = 240,965.13 × 81,715.74
  4. Step 4: Simplify right side
    160,544.70x = 19,690,643,912.15
  5. Step 5: Solve for x
    x = 19,690,643,912.15/160,544.70
  6. Step 6: Final answer
    x = 122,648.98

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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.