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Finding the Fourth Proportional to 214,246.40, 321,062.40 and 157,644.80

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Solution

The fourth proportional to 214,246.40, 321,062.40 and 157,644.80 is: 236,241.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,246.40 : 321,062.40 = 157,644.80 : x
  2. Step 2: Convert to fraction form
    214,246.40/321,062.40 = 157,644.80/x
  3. Step 3: Cross multiply
    214,246.40x = 321,062.40 × 157,644.80
  4. Step 4: Simplify right side
    214,246.40x = 50,613,817,835.52
  5. Step 5: Solve for x
    x = 50,613,817,835.52/214,246.40
  6. Step 6: Final answer
    x = 236,241.16

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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.