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Finding the Fourth Proportional to 590,812.12, 886,311.89 and 211,724.68

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Solution

The fourth proportional to 590,812.12, 886,311.89 and 211,724.68 is: 317,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,812.12 : 886,311.89 = 211,724.68 : x
  2. Step 2: Convert to fraction form
    590,812.12/886,311.89 = 211,724.68/x
  3. Step 3: Cross multiply
    590,812.12x = 886,311.89 × 211,724.68
  4. Step 4: Simplify right side
    590,812.12x = 187,654,098,016.04
  5. Step 5: Solve for x
    x = 187,654,098,016.04/590,812.12
  6. Step 6: Final answer
    x = 317,620.60

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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.