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Finding the Fourth Proportional to 225,789.12, 338,696.64 and 68,001.12

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Solution

The fourth proportional to 225,789.12, 338,696.64 and 68,001.12 is: 102,005.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,789.12 : 338,696.64 = 68,001.12 : x
  2. Step 2: Convert to fraction form
    225,789.12/338,696.64 = 68,001.12/x
  3. Step 3: Cross multiply
    225,789.12x = 338,696.64 × 68,001.12
  4. Step 4: Simplify right side
    225,789.12x = 23,031,750,860.24
  5. Step 5: Solve for x
    x = 23,031,750,860.24/225,789.12
  6. Step 6: Final answer
    x = 102,005.58

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1.5x scale

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.