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Finding the Fourth Proportional to 517,771.31, 776,314.33 and 247,939.25

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Solution

The fourth proportional to 517,771.31, 776,314.33 and 247,939.25 is: 371,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,771.31 : 776,314.33 = 247,939.25 : x
  2. Step 2: Convert to fraction form
    517,771.31/776,314.33 = 247,939.25/x
  3. Step 3: Cross multiply
    517,771.31x = 776,314.33 × 247,939.25
  4. Step 4: Simplify right side
    517,771.31x = 192,478,788,243.03
  5. Step 5: Solve for x
    x = 192,478,788,243.03/517,771.31
  6. Step 6: Final answer
    x = 371,744.80

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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.