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Finding the Fourth Proportional to 216,832.98, 325,168.74 and 74,638.56

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Solution

The fourth proportional to 216,832.98, 325,168.74 and 74,638.56 is: 111,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,832.98 : 325,168.74 = 74,638.56 : x
  2. Step 2: Convert to fraction form
    216,832.98/325,168.74 = 74,638.56/x
  3. Step 3: Cross multiply
    216,832.98x = 325,168.74 × 74,638.56
  4. Step 4: Simplify right side
    216,832.98x = 24,270,126,510.61
  5. Step 5: Solve for x
    x = 24,270,126,510.61/216,832.98
  6. Step 6: Final answer
    x = 111,930.05

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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.