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Finding the Fourth Proportional to 13,133.44, 18,124.16 and 7,544

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Solution

The fourth proportional to 13,133.44, 18,124.16 and 7,544 is: 10,410.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.44 : 18,124.16 = 7,544 : x
  2. Step 2: Convert to fraction form
    13,133.44/18,124.16 = 7,544/x
  3. Step 3: Cross multiply
    13,133.44x = 18,124.16 × 7,544
  4. Step 4: Simplify right side
    13,133.44x = 136,728,663.04
  5. Step 5: Solve for x
    x = 136,728,663.04/13,133.44
  6. Step 6: Final answer
    x = 10,410.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.