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Finding the Fourth Proportional to 157,855.33, 217,855.38 and 86,246.11

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Solution

The fourth proportional to 157,855.33, 217,855.38 and 86,246.11 is: 119,027.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,855.33 : 217,855.38 = 86,246.11 : x
  2. Step 2: Convert to fraction form
    157,855.33/217,855.38 = 86,246.11/x
  3. Step 3: Cross multiply
    157,855.33x = 217,855.38 × 86,246.11
  4. Step 4: Simplify right side
    157,855.33x = 18,789,179,067.57
  5. Step 5: Solve for x
    x = 18,789,179,067.57/157,855.33
  6. Step 6: Final answer
    x = 119,027.84

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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.