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Finding the Fourth Proportional to 13,019.88, 17,976.08 and 8,060.52

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Solution

The fourth proportional to 13,019.88, 17,976.08 and 8,060.52 is: 11,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.88 : 17,976.08 = 8,060.52 : x
  2. Step 2: Convert to fraction form
    13,019.88/17,976.08 = 8,060.52/x
  3. Step 3: Cross multiply
    13,019.88x = 17,976.08 × 8,060.52
  4. Step 4: Simplify right side
    13,019.88x = 144,896,552.36
  5. Step 5: Solve for x
    x = 144,896,552.36/13,019.88
  6. Step 6: Final answer
    x = 11,128.87

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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.