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Finding the Fourth Proportional to 219,356.24, 329,034.42 and 79,114.86

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Solution

The fourth proportional to 219,356.24, 329,034.42 and 79,114.86 is: 118,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,356.24 : 329,034.42 = 79,114.86 : x
  2. Step 2: Convert to fraction form
    219,356.24/329,034.42 = 79,114.86/x
  3. Step 3: Cross multiply
    219,356.24x = 329,034.42 × 79,114.86
  4. Step 4: Simplify right side
    219,356.24x = 26,031,512,073.48
  5. Step 5: Solve for x
    x = 26,031,512,073.48/219,356.24
  6. Step 6: Final answer
    x = 118,672.31

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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.