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Finding the Fourth Proportional to 229,127.56, 343,609.34 and 79,327.64

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Solution

The fourth proportional to 229,127.56, 343,609.34 and 79,327.64 is: 118,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,127.56 : 343,609.34 = 79,327.64 : x
  2. Step 2: Convert to fraction form
    229,127.56/343,609.34 = 79,327.64/x
  3. Step 3: Cross multiply
    229,127.56x = 343,609.34 × 79,327.64
  4. Step 4: Simplify right side
    229,127.56x = 27,257,718,024.16
  5. Step 5: Solve for x
    x = 27,257,718,024.16/229,127.56
  6. Step 6: Final answer
    x = 118,963.07

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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.