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Finding the Fourth Proportional to 45,768.40, 68,537.40 and 43,694.80

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Solution

The fourth proportional to 45,768.40, 68,537.40 and 43,694.80 is: 65,432.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,768.40 : 68,537.40 = 43,694.80 : x
  2. Step 2: Convert to fraction form
    45,768.40/68,537.40 = 43,694.80/x
  3. Step 3: Cross multiply
    45,768.40x = 68,537.40 × 43,694.80
  4. Step 4: Simplify right side
    45,768.40x = 2,994,727,985.52
  5. Step 5: Solve for x
    x = 2,994,727,985.52/45,768.40
  6. Step 6: Final answer
    x = 65,432.22

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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.