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Finding the Fourth Proportional to 116,812.80, 160,805.25 and 104,871.78

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Solution

The fourth proportional to 116,812.80, 160,805.25 and 104,871.78 is: 144,367.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,812.80 : 160,805.25 = 104,871.78 : x
  2. Step 2: Convert to fraction form
    116,812.80/160,805.25 = 104,871.78/x
  3. Step 3: Cross multiply
    116,812.80x = 160,805.25 × 104,871.78
  4. Step 4: Simplify right side
    116,812.80x = 16,863,932,800.85
  5. Step 5: Solve for x
    x = 16,863,932,800.85/116,812.80
  6. Step 6: Final answer
    x = 144,367.17

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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.