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Finding the Fourth Proportional to 64,353.86, 88,709.89 and 45,179.85

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Solution

The fourth proportional to 64,353.86, 88,709.89 and 45,179.85 is: 62,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,353.86 : 88,709.89 = 45,179.85 : x
  2. Step 2: Convert to fraction form
    64,353.86/88,709.89 = 45,179.85/x
  3. Step 3: Cross multiply
    64,353.86x = 88,709.89 × 45,179.85
  4. Step 4: Simplify right side
    64,353.86x = 4,007,899,329.15
  5. Step 5: Solve for x
    x = 4,007,899,329.15/64,353.86
  6. Step 6: Final answer
    x = 62,279.08

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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.