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Finding the Fourth Proportional to 125,216.78, 172,800.69 and 68,628.02

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Solution

The fourth proportional to 125,216.78, 172,800.69 and 68,628.02 is: 94,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,216.78 : 172,800.69 = 68,628.02 : x
  2. Step 2: Convert to fraction form
    125,216.78/172,800.69 = 68,628.02/x
  3. Step 3: Cross multiply
    125,216.78x = 172,800.69 × 68,628.02
  4. Step 4: Simplify right side
    125,216.78x = 11,858,969,209.33
  5. Step 5: Solve for x
    x = 11,858,969,209.33/125,216.78
  6. Step 6: Final answer
    x = 94,707.51

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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.