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Finding the Fourth Proportional to 116,859.13, 161,226.92 and 65,865.58

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Solution

The fourth proportional to 116,859.13, 161,226.92 and 65,865.58 is: 90,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,859.13 : 161,226.92 = 65,865.58 : x
  2. Step 2: Convert to fraction form
    116,859.13/161,226.92 = 65,865.58/x
  3. Step 3: Cross multiply
    116,859.13x = 161,226.92 × 65,865.58
  4. Step 4: Simplify right side
    116,859.13x = 10,619,304,359.01
  5. Step 5: Solve for x
    x = 10,619,304,359.01/116,859.13
  6. Step 6: Final answer
    x = 90,872.70

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1.5x scale

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.