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Finding the Fourth Proportional to 159,963.32, 220,748.64 and 88,343.03

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Solution

The fourth proportional to 159,963.32, 220,748.64 and 88,343.03 is: 121,912.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,963.32 : 220,748.64 = 88,343.03 : x
  2. Step 2: Convert to fraction form
    159,963.32/220,748.64 = 88,343.03/x
  3. Step 3: Cross multiply
    159,963.32x = 220,748.64 × 88,343.03
  4. Step 4: Simplify right side
    159,963.32x = 19,501,603,725.98
  5. Step 5: Solve for x
    x = 19,501,603,725.98/159,963.32
  6. Step 6: Final answer
    x = 121,912.97

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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.