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Finding the Fourth Proportional to 68,897.86, 103,373.62 and 55,693.85

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Solution

The fourth proportional to 68,897.86, 103,373.62 and 55,693.85 is: 83,562.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,897.86 : 103,373.62 = 55,693.85 : x
  2. Step 2: Convert to fraction form
    68,897.86/103,373.62 = 55,693.85/x
  3. Step 3: Cross multiply
    68,897.86x = 103,373.62 × 55,693.85
  4. Step 4: Simplify right side
    68,897.86x = 5,757,274,230.13
  5. Step 5: Solve for x
    x = 5,757,274,230.13/68,897.86
  6. Step 6: Final answer
    x = 83,562.46

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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.