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Finding the Fourth Proportional to 77,245.65, 106,590.18 and 43,249.41

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Solution

The fourth proportional to 77,245.65, 106,590.18 and 43,249.41 is: 59,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,245.65 : 106,590.18 = 43,249.41 : x
  2. Step 2: Convert to fraction form
    77,245.65/106,590.18 = 43,249.41/x
  3. Step 3: Cross multiply
    77,245.65x = 106,590.18 × 43,249.41
  4. Step 4: Simplify right side
    77,245.65x = 4,609,962,396.79
  5. Step 5: Solve for x
    x = 4,609,962,396.79/77,245.65
  6. Step 6: Final answer
    x = 59,679.25

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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.