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Finding the Fourth Proportional to 64,531.44, 89,043.76 and 36,231.64

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Solution

The fourth proportional to 64,531.44, 89,043.76 and 36,231.64 is: 49,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,531.44 : 89,043.76 = 36,231.64 : x
  2. Step 2: Convert to fraction form
    64,531.44/89,043.76 = 36,231.64/x
  3. Step 3: Cross multiply
    64,531.44x = 89,043.76 × 36,231.64
  4. Step 4: Simplify right side
    64,531.44x = 3,226,201,456.57
  5. Step 5: Solve for x
    x = 3,226,201,456.57/64,531.44
  6. Step 6: Final answer
    x = 49,994.26

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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.