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Finding the Fourth Proportional to 124,698.60, 187,047.90 and 82,708.20

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Solution

The fourth proportional to 124,698.60, 187,047.90 and 82,708.20 is: 124,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,698.60 : 187,047.90 = 82,708.20 : x
  2. Step 2: Convert to fraction form
    124,698.60/187,047.90 = 82,708.20/x
  3. Step 3: Cross multiply
    124,698.60x = 187,047.90 × 82,708.20
  4. Step 4: Simplify right side
    124,698.60x = 15,470,395,122.78
  5. Step 5: Solve for x
    x = 15,470,395,122.78/124,698.60
  6. Step 6: Final answer
    x = 124,062.30

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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.