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Finding the Fourth Proportional to 125,241.78, 172,833.66 and 68,651.94

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Solution

The fourth proportional to 125,241.78, 172,833.66 and 68,651.94 is: 94,739.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,241.78 : 172,833.66 = 68,651.94 : x
  2. Step 2: Convert to fraction form
    125,241.78/172,833.66 = 68,651.94/x
  3. Step 3: Cross multiply
    125,241.78x = 172,833.66 × 68,651.94
  4. Step 4: Simplify right side
    125,241.78x = 11,865,366,056.30
  5. Step 5: Solve for x
    x = 11,865,366,056.30/125,241.78
  6. Step 6: Final answer
    x = 94,739.68

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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.