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Finding the Fourth Proportional to 124,448.92, 171,739.46 and 67,860.30

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Solution

The fourth proportional to 124,448.92, 171,739.46 and 67,860.30 is: 93,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,448.92 : 171,739.46 = 67,860.30 : x
  2. Step 2: Convert to fraction form
    124,448.92/171,739.46 = 67,860.30/x
  3. Step 3: Cross multiply
    124,448.92x = 171,739.46 × 67,860.30
  4. Step 4: Simplify right side
    124,448.92x = 11,654,290,743.36
  5. Step 5: Solve for x
    x = 11,654,290,743.36/124,448.92
  6. Step 6: Final answer
    x = 93,647.18

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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.