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Finding the Fourth Proportional to 124,481.22, 186,721.52 and 53,357.74

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Solution

The fourth proportional to 124,481.22, 186,721.52 and 53,357.74 is: 80,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,481.22 : 186,721.52 = 53,357.74 : x
  2. Step 2: Convert to fraction form
    124,481.22/186,721.52 = 53,357.74/x
  3. Step 3: Cross multiply
    124,481.22x = 186,721.52 × 53,357.74
  4. Step 4: Simplify right side
    124,481.22x = 9,963,038,316.56
  5. Step 5: Solve for x
    x = 9,963,038,316.56/124,481.22
  6. Step 6: Final answer
    x = 80,036.48

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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.