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Finding the Fourth Proportional to 688,762.78, 950,750.49 and 517,176.43

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Solution

The fourth proportional to 688,762.78, 950,750.49 and 517,176.43 is: 713,897.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,762.78 : 950,750.49 = 517,176.43 : x
  2. Step 2: Convert to fraction form
    688,762.78/950,750.49 = 517,176.43/x
  3. Step 3: Cross multiply
    688,762.78x = 950,750.49 × 517,176.43
  4. Step 4: Simplify right side
    688,762.78x = 491,705,743,801.49
  5. Step 5: Solve for x
    x = 491,705,743,801.49/688,762.78
  6. Step 6: Final answer
    x = 713,897.09

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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.