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Finding the Fourth Proportional to 124,816.94, 172,250.11 and 68,228.31

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Solution

The fourth proportional to 124,816.94, 172,250.11 and 68,228.31 is: 94,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,816.94 : 172,250.11 = 68,228.31 : x
  2. Step 2: Convert to fraction form
    124,816.94/172,250.11 = 68,228.31/x
  3. Step 3: Cross multiply
    124,816.94x = 172,250.11 × 68,228.31
  4. Step 4: Simplify right side
    124,816.94x = 11,752,333,902.61
  5. Step 5: Solve for x
    x = 11,752,333,902.61/124,816.94
  6. Step 6: Final answer
    x = 94,156.56

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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.