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Finding the Fourth Proportional to 218,060.40, 327,047.40 and 105,740.40

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Solution

The fourth proportional to 218,060.40, 327,047.40 and 105,740.40 is: 158,589.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,060.40 : 327,047.40 = 105,740.40 : x
  2. Step 2: Convert to fraction form
    218,060.40/327,047.40 = 105,740.40/x
  3. Step 3: Cross multiply
    218,060.40x = 327,047.40 × 105,740.40
  4. Step 4: Simplify right side
    218,060.40x = 34,582,122,894.96
  5. Step 5: Solve for x
    x = 34,582,122,894.96/218,060.40
  6. Step 6: Final answer
    x = 158,589.65

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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.