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Finding the Fourth Proportional to 54,679.60, 82,019.40 and 36,964.90

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Solution

The fourth proportional to 54,679.60, 82,019.40 and 36,964.90 is: 55,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,679.60 : 82,019.40 = 36,964.90 : x
  2. Step 2: Convert to fraction form
    54,679.60/82,019.40 = 36,964.90/x
  3. Step 3: Cross multiply
    54,679.60x = 82,019.40 × 36,964.90
  4. Step 4: Simplify right side
    54,679.60x = 3,031,838,919.06
  5. Step 5: Solve for x
    x = 3,031,838,919.06/54,679.60
  6. Step 6: Final answer
    x = 55,447.35

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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.