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Finding the Fourth Proportional to 124,425.80, 186,638.70 and 73,906.10

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Solution

The fourth proportional to 124,425.80, 186,638.70 and 73,906.10 is: 110,859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,425.80 : 186,638.70 = 73,906.10 : x
  2. Step 2: Convert to fraction form
    124,425.80/186,638.70 = 73,906.10/x
  3. Step 3: Cross multiply
    124,425.80x = 186,638.70 × 73,906.10
  4. Step 4: Simplify right side
    124,425.80x = 13,793,738,426.07
  5. Step 5: Solve for x
    x = 13,793,738,426.07/124,425.80
  6. Step 6: Final answer
    x = 110,859.15

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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.