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Finding the Fourth Proportional to 66,709.96, 100,064.92 and 25,147.24

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Solution

The fourth proportional to 66,709.96, 100,064.92 and 25,147.24 is: 37,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,709.96 : 100,064.92 = 25,147.24 : x
  2. Step 2: Convert to fraction form
    66,709.96/100,064.92 = 25,147.24/x
  3. Step 3: Cross multiply
    66,709.96x = 100,064.92 × 25,147.24
  4. Step 4: Simplify right side
    66,709.96x = 2,516,356,558.82
  5. Step 5: Solve for x
    x = 2,516,356,558.82/66,709.96
  6. Step 6: Final answer
    x = 37,720.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.