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Finding the Fourth Proportional to 214,381.52, 321,575.00 and 81,226.01

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Solution

The fourth proportional to 214,381.52, 321,575.00 and 81,226.01 is: 121,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,381.52 : 321,575.00 = 81,226.01 : x
  2. Step 2: Convert to fraction form
    214,381.52/321,575.00 = 81,226.01/x
  3. Step 3: Cross multiply
    214,381.52x = 321,575.00 × 81,226.01
  4. Step 4: Simplify right side
    214,381.52x = 26,120,252,151.75
  5. Step 5: Solve for x
    x = 26,120,252,151.75/214,381.52
  6. Step 6: Final answer
    x = 121,840.04

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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.