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Finding the Fourth Proportional to 51,805.80, 77,747.10 and 34,269.80

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Solution

The fourth proportional to 51,805.80, 77,747.10 and 34,269.80 is: 51,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,805.80 : 77,747.10 = 34,269.80 : x
  2. Step 2: Convert to fraction form
    51,805.80/77,747.10 = 34,269.80/x
  3. Step 3: Cross multiply
    51,805.80x = 77,747.10 × 34,269.80
  4. Step 4: Simplify right side
    51,805.80x = 2,664,377,567.58
  5. Step 5: Solve for x
    x = 2,664,377,567.58/51,805.80
  6. Step 6: Final answer
    x = 51,430.10

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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.