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Finding the Fourth Proportional to 68,866.20, 103,287.96 and 64,383.12

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Solution

The fourth proportional to 68,866.20, 103,287.96 and 64,383.12 is: 96,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,866.20 : 103,287.96 = 64,383.12 : x
  2. Step 2: Convert to fraction form
    68,866.20/103,287.96 = 64,383.12/x
  3. Step 3: Cross multiply
    68,866.20x = 103,287.96 × 64,383.12
  4. Step 4: Simplify right side
    68,866.20x = 6,650,001,123.24
  5. Step 5: Solve for x
    x = 6,650,001,123.24/68,866.20
  6. Step 6: Final answer
    x = 96,564.08

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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.