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Finding the Fourth Proportional to 124,783.69, 187,069.45 and 54,610.57

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Solution

The fourth proportional to 124,783.69, 187,069.45 and 54,610.57 is: 81,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,783.69 : 187,069.45 = 54,610.57 : x
  2. Step 2: Convert to fraction form
    124,783.69/187,069.45 = 54,610.57/x
  3. Step 3: Cross multiply
    124,783.69x = 187,069.45 × 54,610.57
  4. Step 4: Simplify right side
    124,783.69x = 10,215,969,294.09
  5. Step 5: Solve for x
    x = 10,215,969,294.09/124,783.69
  6. Step 6: Final answer
    x = 81,869.43

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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.