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Finding the Fourth Proportional to 64,486.78, 89,033.25 and 44,337.22

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Solution

The fourth proportional to 64,486.78, 89,033.25 and 44,337.22 is: 61,213.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,486.78 : 89,033.25 = 44,337.22 : x
  2. Step 2: Convert to fraction form
    64,486.78/89,033.25 = 44,337.22/x
  3. Step 3: Cross multiply
    64,486.78x = 89,033.25 × 44,337.22
  4. Step 4: Simplify right side
    64,486.78x = 3,947,486,792.57
  5. Step 5: Solve for x
    x = 3,947,486,792.57/64,486.78
  6. Step 6: Final answer
    x = 61,213.89

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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.