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Finding the Fourth Proportional to 13,347.55, 20,057.69 and 7,112.01

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Solution

The fourth proportional to 13,347.55, 20,057.69 and 7,112.01 is: 10,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.55 : 20,057.69 = 7,112.01 : x
  2. Step 2: Convert to fraction form
    13,347.55/20,057.69 = 7,112.01/x
  3. Step 3: Cross multiply
    13,347.55x = 20,057.69 × 7,112.01
  4. Step 4: Simplify right side
    13,347.55x = 142,650,584.85
  5. Step 5: Solve for x
    x = 142,650,584.85/13,347.55
  6. Step 6: Final answer
    x = 10,687.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.