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Finding the Fourth Proportional to 157,866.09, 217,854.40 and 86,250.21

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Solution

The fourth proportional to 157,866.09, 217,854.40 and 86,250.21 is: 119,024.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,866.09 : 217,854.40 = 86,250.21 : x
  2. Step 2: Convert to fraction form
    157,866.09/217,854.40 = 86,250.21/x
  3. Step 3: Cross multiply
    157,866.09x = 217,854.40 × 86,250.21
  4. Step 4: Simplify right side
    157,866.09x = 18,789,987,749.42
  5. Step 5: Solve for x
    x = 18,789,987,749.42/157,866.09
  6. Step 6: Final answer
    x = 119,024.85

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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.