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Finding the Fourth Proportional to 69,045.32, 95,643.34 and 67,645.64

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Solution

The fourth proportional to 69,045.32, 95,643.34 and 67,645.64 is: 93,704.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,045.32 : 95,643.34 = 67,645.64 : x
  2. Step 2: Convert to fraction form
    69,045.32/95,643.34 = 67,645.64/x
  3. Step 3: Cross multiply
    69,045.32x = 95,643.34 × 67,645.64
  4. Step 4: Simplify right side
    69,045.32x = 6,469,854,946.04
  5. Step 5: Solve for x
    x = 6,469,854,946.04/69,045.32
  6. Step 6: Final answer
    x = 93,704.47

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.