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Finding the Fourth Proportional to 226,611.76, 312,731.87 and 124,641.52

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Solution

The fourth proportional to 226,611.76, 312,731.87 and 124,641.52 is: 172,009.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,611.76 : 312,731.87 = 124,641.52 : x
  2. Step 2: Convert to fraction form
    226,611.76/312,731.87 = 124,641.52/x
  3. Step 3: Cross multiply
    226,611.76x = 312,731.87 × 124,641.52
  4. Step 4: Simplify right side
    226,611.76x = 38,979,375,629.24
  5. Step 5: Solve for x
    x = 38,979,375,629.24/226,611.76
  6. Step 6: Final answer
    x = 172,009.50

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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.