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Finding the Fourth Proportional to 78,296.80, 117,250.80 and 62,744.80

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Solution

The fourth proportional to 78,296.80, 117,250.80 and 62,744.80 is: 93,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,296.80 : 117,250.80 = 62,744.80 : x
  2. Step 2: Convert to fraction form
    78,296.80/117,250.80 = 62,744.80/x
  3. Step 3: Cross multiply
    78,296.80x = 117,250.80 × 62,744.80
  4. Step 4: Simplify right side
    78,296.80x = 7,356,877,995.84
  5. Step 5: Solve for x
    x = 7,356,877,995.84/78,296.80
  6. Step 6: Final answer
    x = 93,961.41

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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.