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Finding the Fourth Proportional to 157,873.80, 217,859.04 and 86,250.36

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Solution

The fourth proportional to 157,873.80, 217,859.04 and 86,250.36 is: 119,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,873.80 : 217,859.04 = 86,250.36 : x
  2. Step 2: Convert to fraction form
    157,873.80/217,859.04 = 86,250.36/x
  3. Step 3: Cross multiply
    157,873.80x = 217,859.04 × 86,250.36
  4. Step 4: Simplify right side
    157,873.80x = 18,790,420,629.25
  5. Step 5: Solve for x
    x = 18,790,420,629.25/157,873.80
  6. Step 6: Final answer
    x = 119,021.78

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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.