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Finding the Fourth Proportional to 15,109.92, 22,639.68 and 5,243.76

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Solution

The fourth proportional to 15,109.92, 22,639.68 and 5,243.76 is: 7,856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.92 : 22,639.68 = 5,243.76 : x
  2. Step 2: Convert to fraction form
    15,109.92/22,639.68 = 5,243.76/x
  3. Step 3: Cross multiply
    15,109.92x = 22,639.68 × 5,243.76
  4. Step 4: Simplify right side
    15,109.92x = 118,717,048.40
  5. Step 5: Solve for x
    x = 118,717,048.40/15,109.92
  6. Step 6: Final answer
    x = 7,856.89

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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.