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Finding the Fourth Proportional to 214,480.60, 321,723.17 and 64,722.20

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Solution

The fourth proportional to 214,480.60, 321,723.17 and 64,722.20 is: 97,083.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,480.60 : 321,723.17 = 64,722.20 : x
  2. Step 2: Convert to fraction form
    214,480.60/321,723.17 = 64,722.20/x
  3. Step 3: Cross multiply
    214,480.60x = 321,723.17 × 64,722.20
  4. Step 4: Simplify right side
    214,480.60x = 20,822,631,353.37
  5. Step 5: Solve for x
    x = 20,822,631,353.37/214,480.60
  6. Step 6: Final answer
    x = 97,083.99

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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.