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Finding the Fourth Proportional to 218,774.10, 327,903.18 and 98,690.52

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Solution

The fourth proportional to 218,774.10, 327,903.18 and 98,690.52 is: 147,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,774.10 : 327,903.18 = 98,690.52 : x
  2. Step 2: Convert to fraction form
    218,774.10/327,903.18 = 98,690.52/x
  3. Step 3: Cross multiply
    218,774.10x = 327,903.18 × 98,690.52
  4. Step 4: Simplify right side
    218,774.10x = 32,360,935,343.85
  5. Step 5: Solve for x
    x = 32,360,935,343.85/218,774.10
  6. Step 6: Final answer
    x = 147,919.41

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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.