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Finding the Fourth Proportional to 64,899.44, 89,601.76 and 49,763.02

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Solution

The fourth proportional to 64,899.44, 89,601.76 and 49,763.02 is: 68,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899.44 : 89,601.76 = 49,763.02 : x
  2. Step 2: Convert to fraction form
    64,899.44/89,601.76 = 49,763.02/x
  3. Step 3: Cross multiply
    64,899.44x = 89,601.76 × 49,763.02
  4. Step 4: Simplify right side
    64,899.44x = 4,458,853,726.91
  5. Step 5: Solve for x
    x = 4,458,853,726.91/64,899.44
  6. Step 6: Final answer
    x = 68,704.05

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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.