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Finding the Fourth Proportional to 150,672.19, 207,913.87 and 89,407.82

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Solution

The fourth proportional to 150,672.19, 207,913.87 and 89,407.82 is: 123,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,672.19 : 207,913.87 = 89,407.82 : x
  2. Step 2: Convert to fraction form
    150,672.19/207,913.87 = 89,407.82/x
  3. Step 3: Cross multiply
    150,672.19x = 207,913.87 × 89,407.82
  4. Step 4: Simplify right side
    150,672.19x = 18,589,125,864.46
  5. Step 5: Solve for x
    x = 18,589,125,864.46/150,672.19
  6. Step 6: Final answer
    x = 123,374.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.