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Finding the Fourth Proportional to 64,641.22, 89,202.78 and 35,960.74

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Solution

The fourth proportional to 64,641.22, 89,202.78 and 35,960.74 is: 49,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,641.22 : 89,202.78 = 35,960.74 : x
  2. Step 2: Convert to fraction form
    64,641.22/89,202.78 = 35,960.74/x
  3. Step 3: Cross multiply
    64,641.22x = 89,202.78 × 35,960.74
  4. Step 4: Simplify right side
    64,641.22x = 3,207,797,978.86
  5. Step 5: Solve for x
    x = 3,207,797,978.86/64,641.22
  6. Step 6: Final answer
    x = 49,624.65

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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.