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Finding the Fourth Proportional to 64,432.74, 88,921.62 and 36,140.26

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Solution

The fourth proportional to 64,432.74, 88,921.62 and 36,140.26 is: 49,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,432.74 : 88,921.62 = 36,140.26 : x
  2. Step 2: Convert to fraction form
    64,432.74/88,921.62 = 36,140.26/x
  3. Step 3: Cross multiply
    64,432.74x = 88,921.62 × 36,140.26
  4. Step 4: Simplify right side
    64,432.74x = 3,213,650,466.42
  5. Step 5: Solve for x
    x = 3,213,650,466.42/64,432.74
  6. Step 6: Final answer
    x = 49,876.05

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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.