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Finding the Fourth Proportional to 19,200.17, 28,744.18 and 15,509.59

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Solution

The fourth proportional to 19,200.17, 28,744.18 and 15,509.59 is: 23,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.17 : 28,744.18 = 15,509.59 : x
  2. Step 2: Convert to fraction form
    19,200.17/28,744.18 = 15,509.59/x
  3. Step 3: Cross multiply
    19,200.17x = 28,744.18 × 15,509.59
  4. Step 4: Simplify right side
    19,200.17x = 445,810,446.69
  5. Step 5: Solve for x
    x = 445,810,446.69/19,200.17
  6. Step 6: Final answer
    x = 23,219.09

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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.