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Finding the Fourth Proportional to 55,593.56, 76,719.13 and 30,443.06

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Solution

The fourth proportional to 55,593.56, 76,719.13 and 30,443.06 is: 42,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,593.56 : 76,719.13 = 30,443.06 : x
  2. Step 2: Convert to fraction form
    55,593.56/76,719.13 = 30,443.06/x
  3. Step 3: Cross multiply
    55,593.56x = 76,719.13 × 30,443.06
  4. Step 4: Simplify right side
    55,593.56x = 2,335,565,193.43
  5. Step 5: Solve for x
    x = 2,335,565,193.43/55,593.56
  6. Step 6: Final answer
    x = 42,011.43

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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.