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Finding the Fourth Proportional to 107,107.91, 147,876.13 and 68,933.79

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Solution

The fourth proportional to 107,107.91, 147,876.13 and 68,933.79 is: 95,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,107.91 : 147,876.13 = 68,933.79 : x
  2. Step 2: Convert to fraction form
    107,107.91/147,876.13 = 68,933.79/x
  3. Step 3: Cross multiply
    107,107.91x = 147,876.13 × 68,933.79
  4. Step 4: Simplify right side
    107,107.91x = 10,193,662,091.43
  5. Step 5: Solve for x
    x = 10,193,662,091.43/107,107.91
  6. Step 6: Final answer
    x = 95,171.89

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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.