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Finding the Fourth Proportional to 312,648.76, 469,060.62 and 125,791.48

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Solution

The fourth proportional to 312,648.76, 469,060.62 and 125,791.48 is: 188,722.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,648.76 : 469,060.62 = 125,791.48 : x
  2. Step 2: Convert to fraction form
    312,648.76/469,060.62 = 125,791.48/x
  3. Step 3: Cross multiply
    312,648.76x = 469,060.62 × 125,791.48
  4. Step 4: Simplify right side
    312,648.76x = 59,003,829,599.52
  5. Step 5: Solve for x
    x = 59,003,829,599.52/312,648.76
  6. Step 6: Final answer
    x = 188,722.42

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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.