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Finding the Fourth Proportional to 64,904.88, 89,540.28 and 38,033.76

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Solution

The fourth proportional to 64,904.88, 89,540.28 and 38,033.76 is: 52,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,904.88 : 89,540.28 = 38,033.76 : x
  2. Step 2: Convert to fraction form
    64,904.88/89,540.28 = 38,033.76/x
  3. Step 3: Cross multiply
    64,904.88x = 89,540.28 × 38,033.76
  4. Step 4: Simplify right side
    64,904.88x = 3,405,553,519.85
  5. Step 5: Solve for x
    x = 3,405,553,519.85/64,904.88
  6. Step 6: Final answer
    x = 52,469.91

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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.