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Finding the Fourth Proportional to 451,031.08, 622,423.65 and 247,077.54

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Solution

The fourth proportional to 451,031.08, 622,423.65 and 247,077.54 is: 340,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,031.08 : 622,423.65 = 247,077.54 : x
  2. Step 2: Convert to fraction form
    451,031.08/622,423.65 = 247,077.54/x
  3. Step 3: Cross multiply
    451,031.08x = 622,423.65 × 247,077.54
  4. Step 4: Simplify right side
    451,031.08x = 153,786,904,279.82
  5. Step 5: Solve for x
    x = 153,786,904,279.82/451,031.08
  6. Step 6: Final answer
    x = 340,967.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.