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Finding the Fourth Proportional to 124,806.80, 187,210.20 and 118,974.80

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Solution

The fourth proportional to 124,806.80, 187,210.20 and 118,974.80 is: 178,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,806.80 : 187,210.20 = 118,974.80 : x
  2. Step 2: Convert to fraction form
    124,806.80/187,210.20 = 118,974.80/x
  3. Step 3: Cross multiply
    124,806.80x = 187,210.20 × 118,974.80
  4. Step 4: Simplify right side
    124,806.80x = 22,273,296,102.96
  5. Step 5: Solve for x
    x = 22,273,296,102.96/124,806.80
  6. Step 6: Final answer
    x = 178,462.20

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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.