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Finding the Fourth Proportional to 69,021.72, 95,265.72 and 48,857.58

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Solution

The fourth proportional to 69,021.72, 95,265.72 and 48,857.58 is: 67,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,021.72 : 95,265.72 = 48,857.58 : x
  2. Step 2: Convert to fraction form
    69,021.72/95,265.72 = 48,857.58/x
  3. Step 3: Cross multiply
    69,021.72x = 95,265.72 × 48,857.58
  4. Step 4: Simplify right side
    69,021.72x = 4,654,452,536.16
  5. Step 5: Solve for x
    x = 4,654,452,536.16/69,021.72
  6. Step 6: Final answer
    x = 67,434.61

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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.