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Finding the Fourth Proportional to 64,799.88, 89,423.84 and 36,505.56

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Solution

The fourth proportional to 64,799.88, 89,423.84 and 36,505.56 is: 50,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,799.88 : 89,423.84 = 36,505.56 : x
  2. Step 2: Convert to fraction form
    64,799.88/89,423.84 = 36,505.56/x
  3. Step 3: Cross multiply
    64,799.88x = 89,423.84 × 36,505.56
  4. Step 4: Simplify right side
    64,799.88x = 3,264,467,356.55
  5. Step 5: Solve for x
    x = 3,264,467,356.55/64,799.88
  6. Step 6: Final answer
    x = 50,377.68

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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.