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Finding the Fourth Proportional to 65,896.67, 90,933.87 and 38,668.83

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Solution

The fourth proportional to 65,896.67, 90,933.87 and 38,668.83 is: 53,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,896.67 : 90,933.87 = 38,668.83 : x
  2. Step 2: Convert to fraction form
    65,896.67/90,933.87 = 38,668.83/x
  3. Step 3: Cross multiply
    65,896.67x = 90,933.87 × 38,668.83
  4. Step 4: Simplify right side
    65,896.67x = 3,516,306,164.28
  5. Step 5: Solve for x
    x = 3,516,306,164.28/65,896.67
  6. Step 6: Final answer
    x = 53,360.91

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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.