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Finding the Fourth Proportional to 229,158.72, 343,613.14 and 79,386.48

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Solution

The fourth proportional to 229,158.72, 343,613.14 and 79,386.48 is: 119,036.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,158.72 : 343,613.14 = 79,386.48 : x
  2. Step 2: Convert to fraction form
    229,158.72/343,613.14 = 79,386.48/x
  3. Step 3: Cross multiply
    229,158.72x = 343,613.14 × 79,386.48
  4. Step 4: Simplify right side
    229,158.72x = 27,278,237,467.88
  5. Step 5: Solve for x
    x = 27,278,237,467.88/229,158.72
  6. Step 6: Final answer
    x = 119,036.44

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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.