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Finding the Fourth Proportional to 64,841.68, 89,480.28 and 36,546.80

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Solution

The fourth proportional to 64,841.68, 89,480.28 and 36,546.80 is: 50,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,841.68 : 89,480.28 = 36,546.80 : x
  2. Step 2: Convert to fraction form
    64,841.68/89,480.28 = 36,546.80/x
  3. Step 3: Cross multiply
    64,841.68x = 89,480.28 × 36,546.80
  4. Step 4: Simplify right side
    64,841.68x = 3,270,217,897.10
  5. Step 5: Solve for x
    x = 3,270,217,897.10/64,841.68
  6. Step 6: Final answer
    x = 50,433.89

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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.