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Finding the Fourth Proportional to 187,053.33, 280,691.78 and 68,736.63

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Solution

The fourth proportional to 187,053.33, 280,691.78 and 68,736.63 is: 103,146.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,053.33 : 280,691.78 = 68,736.63 : x
  2. Step 2: Convert to fraction form
    187,053.33/280,691.78 = 68,736.63/x
  3. Step 3: Cross multiply
    187,053.33x = 280,691.78 × 68,736.63
  4. Step 4: Simplify right side
    187,053.33x = 19,293,806,682.22
  5. Step 5: Solve for x
    x = 19,293,806,682.22/187,053.33
  6. Step 6: Final answer
    x = 103,146.02

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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.