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Finding the Fourth Proportional to 107,963.82, 148,990.74 and 62,668.86

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Solution

The fourth proportional to 107,963.82, 148,990.74 and 62,668.86 is: 86,483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,963.82 : 148,990.74 = 62,668.86 : x
  2. Step 2: Convert to fraction form
    107,963.82/148,990.74 = 62,668.86/x
  3. Step 3: Cross multiply
    107,963.82x = 148,990.74 × 62,668.86
  4. Step 4: Simplify right side
    107,963.82x = 9,337,079,826.36
  5. Step 5: Solve for x
    x = 9,337,079,826.36/107,963.82
  6. Step 6: Final answer
    x = 86,483.41

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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.