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Finding the Fourth Proportional to 159,908.50, 220,693.17 and 92,840.50

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Solution

The fourth proportional to 159,908.50, 220,693.17 and 92,840.50 is: 128,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,908.50 : 220,693.17 = 92,840.50 : x
  2. Step 2: Convert to fraction form
    159,908.50/220,693.17 = 92,840.50/x
  3. Step 3: Cross multiply
    159,908.50x = 220,693.17 × 92,840.50
  4. Step 4: Simplify right side
    159,908.50x = 20,489,264,249.39
  5. Step 5: Solve for x
    x = 20,489,264,249.39/159,908.50
  6. Step 6: Final answer
    x = 128,131.18

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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.