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Finding the Fourth Proportional to 64,671.92, 89,246.40 and 36,377.60

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Solution

The fourth proportional to 64,671.92, 89,246.40 and 36,377.60 is: 50,200.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,671.92 : 89,246.40 = 36,377.60 : x
  2. Step 2: Convert to fraction form
    64,671.92/89,246.40 = 36,377.60/x
  3. Step 3: Cross multiply
    64,671.92x = 89,246.40 × 36,377.60
  4. Step 4: Simplify right side
    64,671.92x = 3,246,569,840.64
  5. Step 5: Solve for x
    x = 3,246,569,840.64/64,671.92
  6. Step 6: Final answer
    x = 50,200.61

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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.