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Finding the Fourth Proportional to 64,642.44, 89,207.10 and 36,347.88

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Solution

The fourth proportional to 64,642.44, 89,207.10 and 36,347.88 is: 50,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,642.44 : 89,207.10 = 36,347.88 : x
  2. Step 2: Convert to fraction form
    64,642.44/89,207.10 = 36,347.88/x
  3. Step 3: Cross multiply
    64,642.44x = 89,207.10 × 36,347.88
  4. Step 4: Simplify right side
    64,642.44x = 3,242,488,965.95
  5. Step 5: Solve for x
    x = 3,242,488,965.95/64,642.44
  6. Step 6: Final answer
    x = 50,160.37

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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.