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Finding the Fourth Proportional to 124,686.80, 187,030.20 and 82,696.40

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Solution

The fourth proportional to 124,686.80, 187,030.20 and 82,696.40 is: 124,044.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,686.80 : 187,030.20 = 82,696.40 : x
  2. Step 2: Convert to fraction form
    124,686.80/187,030.20 = 82,696.40/x
  3. Step 3: Cross multiply
    124,686.80x = 187,030.20 × 82,696.40
  4. Step 4: Simplify right side
    124,686.80x = 15,466,724,231.28
  5. Step 5: Solve for x
    x = 15,466,724,231.28/124,686.80
  6. Step 6: Final answer
    x = 124,044.60

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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.