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Finding the Fourth Proportional to 64,209.60, 88,693.91 and 49,286.66

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Solution

The fourth proportional to 64,209.60, 88,693.91 and 49,286.66 is: 68,080.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,209.60 : 88,693.91 = 49,286.66 : x
  2. Step 2: Convert to fraction form
    64,209.60/88,693.91 = 49,286.66/x
  3. Step 3: Cross multiply
    64,209.60x = 88,693.91 × 49,286.66
  4. Step 4: Simplify right side
    64,209.60x = 4,371,425,896.34
  5. Step 5: Solve for x
    x = 4,371,425,896.34/64,209.60
  6. Step 6: Final answer
    x = 68,080.57

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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.