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Finding the Fourth Proportional to 69,468.16, 103,592.09 and 68,836.66

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Solution

The fourth proportional to 69,468.16, 103,592.09 and 68,836.66 is: 102,650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,468.16 : 103,592.09 = 68,836.66 : x
  2. Step 2: Convert to fraction form
    69,468.16/103,592.09 = 68,836.66/x
  3. Step 3: Cross multiply
    69,468.16x = 103,592.09 × 68,836.66
  4. Step 4: Simplify right side
    69,468.16x = 7,130,933,478.02
  5. Step 5: Solve for x
    x = 7,130,933,478.02/69,468.16
  6. Step 6: Final answer
    x = 102,650.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.