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Finding the Fourth Proportional to 41,889.60, 62,812.80 and 15,580.80

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Solution

The fourth proportional to 41,889.60, 62,812.80 and 15,580.80 is: 23,363.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,889.60 : 62,812.80 = 15,580.80 : x
  2. Step 2: Convert to fraction form
    41,889.60/62,812.80 = 15,580.80/x
  3. Step 3: Cross multiply
    41,889.60x = 62,812.80 × 15,580.80
  4. Step 4: Simplify right side
    41,889.60x = 978,673,674.24
  5. Step 5: Solve for x
    x = 978,673,674.24/41,889.60
  6. Step 6: Final answer
    x = 23,363.17

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Why These Related Problems?

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