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Finding the Fourth Proportional to 43,395.55, 65,081.25 and 15,311.96

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Solution

The fourth proportional to 43,395.55, 65,081.25 and 15,311.96 is: 22,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,395.55 : 65,081.25 = 15,311.96 : x
  2. Step 2: Convert to fraction form
    43,395.55/65,081.25 = 15,311.96/x
  3. Step 3: Cross multiply
    43,395.55x = 65,081.25 × 15,311.96
  4. Step 4: Simplify right side
    43,395.55x = 996,521,555.37
  5. Step 5: Solve for x
    x = 996,521,555.37/43,395.55
  6. Step 6: Final answer
    x = 22,963.68

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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.