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Finding the Fourth Proportional to 43,690.52, 65,535.76 and 10,858.52

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Solution

The fourth proportional to 43,690.52, 65,535.76 and 10,858.52 is: 16,287.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,690.52 : 65,535.76 = 10,858.52 : x
  2. Step 2: Convert to fraction form
    43,690.52/65,535.76 = 10,858.52/x
  3. Step 3: Cross multiply
    43,690.52x = 65,535.76 × 10,858.52
  4. Step 4: Simplify right side
    43,690.52x = 711,621,360.68
  5. Step 5: Solve for x
    x = 711,621,360.68/43,690.52
  6. Step 6: Final answer
    x = 16,287.78

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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.