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Finding the Fourth Proportional to 64,098.56, 95,979.60 and 45,276.80

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Solution

The fourth proportional to 64,098.56, 95,979.60 and 45,276.80 is: 67,796.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,098.56 : 95,979.60 = 45,276.80 : x
  2. Step 2: Convert to fraction form
    64,098.56/95,979.60 = 45,276.80/x
  3. Step 3: Cross multiply
    64,098.56x = 95,979.60 × 45,276.80
  4. Step 4: Simplify right side
    64,098.56x = 4,345,649,153.28
  5. Step 5: Solve for x
    x = 4,345,649,153.28/64,098.56
  6. Step 6: Final answer
    x = 67,796.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.