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Finding the Fourth Proportional to 107,881.72, 148,843.74 and 62,550.61

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Solution

The fourth proportional to 107,881.72, 148,843.74 and 62,550.61 is: 86,300.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,881.72 : 148,843.74 = 62,550.61 : x
  2. Step 2: Convert to fraction form
    107,881.72/148,843.74 = 62,550.61/x
  3. Step 3: Cross multiply
    107,881.72x = 148,843.74 × 62,550.61
  4. Step 4: Simplify right side
    107,881.72x = 9,310,266,731.68
  5. Step 5: Solve for x
    x = 9,310,266,731.68/107,881.72
  6. Step 6: Final answer
    x = 86,300.69

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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.