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Finding the Fourth Proportional to 43,793.52, 65,690.64 and 18,831.84

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Solution

The fourth proportional to 43,793.52, 65,690.64 and 18,831.84 is: 28,247.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,793.52 : 65,690.64 = 18,831.84 : x
  2. Step 2: Convert to fraction form
    43,793.52/65,690.64 = 18,831.84/x
  3. Step 3: Cross multiply
    43,793.52x = 65,690.64 × 18,831.84
  4. Step 4: Simplify right side
    43,793.52x = 1,237,075,621.98
  5. Step 5: Solve for x
    x = 1,237,075,621.98/43,793.52
  6. Step 6: Final answer
    x = 28,247.91

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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.