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Finding the Fourth Proportional to 519,616.80, 779,498.10 and 164,593.80

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Solution

The fourth proportional to 519,616.80, 779,498.10 and 164,593.80 is: 246,913.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,616.80 : 779,498.10 = 164,593.80 : x
  2. Step 2: Convert to fraction form
    519,616.80/779,498.10 = 164,593.80/x
  3. Step 3: Cross multiply
    519,616.80x = 779,498.10 × 164,593.80
  4. Step 4: Simplify right side
    519,616.80x = 128,300,554,371.78
  5. Step 5: Solve for x
    x = 128,300,554,371.78/519,616.80
  6. Step 6: Final answer
    x = 246,913.79

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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.