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Finding the Fourth Proportional to 14,012.90, 19,337.78 and 7,725.28

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Solution

The fourth proportional to 14,012.90, 19,337.78 and 7,725.28 is: 10,660.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,012.90 : 19,337.78 = 7,725.28 : x
  2. Step 2: Convert to fraction form
    14,012.90/19,337.78 = 7,725.28/x
  3. Step 3: Cross multiply
    14,012.90x = 19,337.78 × 7,725.28
  4. Step 4: Simplify right side
    14,012.90x = 149,389,765.08
  5. Step 5: Solve for x
    x = 149,389,765.08/14,012.90
  6. Step 6: Final answer
    x = 10,660.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.