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Finding the Fourth Proportional to 64,432.44, 88,921.22 and 36,139.96

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Solution

The fourth proportional to 64,432.44, 88,921.22 and 36,139.96 is: 49,875.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,432.44 : 88,921.22 = 36,139.96 : x
  2. Step 2: Convert to fraction form
    64,432.44/88,921.22 = 36,139.96/x
  3. Step 3: Cross multiply
    64,432.44x = 88,921.22 × 36,139.96
  4. Step 4: Simplify right side
    64,432.44x = 3,213,609,333.95
  5. Step 5: Solve for x
    x = 3,213,609,333.95/64,432.44
  6. Step 6: Final answer
    x = 49,875.64

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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.