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Finding the Fourth Proportional to 547,118, 755,019.94 and 317,731.68

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Solution

The fourth proportional to 547,118, 755,019.94 and 317,731.68 is: 438,468.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,118 : 755,019.94 = 317,731.68 : x
  2. Step 2: Convert to fraction form
    547,118/755,019.94 = 317,731.68/x
  3. Step 3: Cross multiply
    547,118x = 755,019.94 × 317,731.68
  4. Step 4: Simplify right side
    547,118x = 239,893,753,969.70
  5. Step 5: Solve for x
    x = 239,893,753,969.70/547,118
  6. Step 6: Final answer
    x = 438,468.03

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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.