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Finding the Fourth Proportional to 61,917.84, 85,491 and 38,076.48

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Solution

The fourth proportional to 61,917.84, 85,491 and 38,076.48 is: 52,572.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,917.84 : 85,491 = 38,076.48 : x
  2. Step 2: Convert to fraction form
    61,917.84/85,491 = 38,076.48/x
  3. Step 3: Cross multiply
    61,917.84x = 85,491 × 38,076.48
  4. Step 4: Simplify right side
    61,917.84x = 3,255,196,351.68
  5. Step 5: Solve for x
    x = 3,255,196,351.68/61,917.84
  6. Step 6: Final answer
    x = 52,572.83

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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.