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Finding the Fourth Proportional to 64,994.70, 89,691.07 and 36,312.60

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Solution

The fourth proportional to 64,994.70, 89,691.07 and 36,312.60 is: 50,110.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,994.70 : 89,691.07 = 36,312.60 : x
  2. Step 2: Convert to fraction form
    64,994.70/89,691.07 = 36,312.60/x
  3. Step 3: Cross multiply
    64,994.70x = 89,691.07 × 36,312.60
  4. Step 4: Simplify right side
    64,994.70x = 3,256,915,766.92
  5. Step 5: Solve for x
    x = 3,256,915,766.92/64,994.70
  6. Step 6: Final answer
    x = 50,110.48

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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.