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Finding the Fourth Proportional to 214,844.60, 322,266.90 and 115,311.80

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Solution

The fourth proportional to 214,844.60, 322,266.90 and 115,311.80 is: 172,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,844.60 : 322,266.90 = 115,311.80 : x
  2. Step 2: Convert to fraction form
    214,844.60/322,266.90 = 115,311.80/x
  3. Step 3: Cross multiply
    214,844.60x = 322,266.90 × 115,311.80
  4. Step 4: Simplify right side
    214,844.60x = 37,161,176,319.42
  5. Step 5: Solve for x
    x = 37,161,176,319.42/214,844.60
  6. Step 6: Final answer
    x = 172,967.70

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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.