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Finding the Fourth Proportional to 19,059.12, 28,571.67 and 9,693.90

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Solution

The fourth proportional to 19,059.12, 28,571.67 and 9,693.90 is: 14,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,059.12 : 28,571.67 = 9,693.90 : x
  2. Step 2: Convert to fraction form
    19,059.12/28,571.67 = 9,693.90/x
  3. Step 3: Cross multiply
    19,059.12x = 28,571.67 × 9,693.90
  4. Step 4: Simplify right side
    19,059.12x = 276,970,911.81
  5. Step 5: Solve for x
    x = 276,970,911.81/19,059.12
  6. Step 6: Final answer
    x = 14,532.20

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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.