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Finding the Fourth Proportional to 14,758, 20,365.30 and 8,043.60

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Solution

The fourth proportional to 14,758, 20,365.30 and 8,043.60 is: 11,099.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,758 : 20,365.30 = 8,043.60 : x
  2. Step 2: Convert to fraction form
    14,758/20,365.30 = 8,043.60/x
  3. Step 3: Cross multiply
    14,758x = 20,365.30 × 8,043.60
  4. Step 4: Simplify right side
    14,758x = 163,810,327.08
  5. Step 5: Solve for x
    x = 163,810,327.08/14,758
  6. Step 6: Final answer
    x = 11,099.76

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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.