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Finding the Fourth Proportional to 69,489.72, 95,846.94 and 42,645.24

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Solution

The fourth proportional to 69,489.72, 95,846.94 and 42,645.24 is: 58,820.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,489.72 : 95,846.94 = 42,645.24 : x
  2. Step 2: Convert to fraction form
    69,489.72/95,846.94 = 42,645.24/x
  3. Step 3: Cross multiply
    69,489.72x = 95,846.94 × 42,645.24
  4. Step 4: Simplify right side
    69,489.72x = 4,087,415,759.57
  5. Step 5: Solve for x
    x = 4,087,415,759.57/69,489.72
  6. Step 6: Final answer
    x = 58,820.44

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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.