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Finding the Fourth Proportional to 55,773.43, 76,967.43 and 30,279.80

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Solution

The fourth proportional to 55,773.43, 76,967.43 and 30,279.80 is: 41,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,773.43 : 76,967.43 = 30,279.80 : x
  2. Step 2: Convert to fraction form
    55,773.43/76,967.43 = 30,279.80/x
  3. Step 3: Cross multiply
    55,773.43x = 76,967.43 × 30,279.80
  4. Step 4: Simplify right side
    55,773.43x = 2,330,558,386.91
  5. Step 5: Solve for x
    x = 2,330,558,386.91/55,773.43
  6. Step 6: Final answer
    x = 41,786.18

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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.