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Finding the Fourth Proportional to 13,601.92, 20,386.47 and 7,024.51

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Solution

The fourth proportional to 13,601.92, 20,386.47 and 7,024.51 is: 10,528.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.92 : 20,386.47 = 7,024.51 : x
  2. Step 2: Convert to fraction form
    13,601.92/20,386.47 = 7,024.51/x
  3. Step 3: Cross multiply
    13,601.92x = 20,386.47 × 7,024.51
  4. Step 4: Simplify right side
    13,601.92x = 143,204,962.38
  5. Step 5: Solve for x
    x = 143,204,962.38/13,601.92
  6. Step 6: Final answer
    x = 10,528.29

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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.