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Finding the Fourth Proportional to 19,157.66, 28,726.77 and 8,760.50

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Solution

The fourth proportional to 19,157.66, 28,726.77 and 8,760.50 is: 13,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.66 : 28,726.77 = 8,760.50 : x
  2. Step 2: Convert to fraction form
    19,157.66/28,726.77 = 8,760.50/x
  3. Step 3: Cross multiply
    19,157.66x = 28,726.77 × 8,760.50
  4. Step 4: Simplify right side
    19,157.66x = 251,660,868.59
  5. Step 5: Solve for x
    x = 251,660,868.59/19,157.66
  6. Step 6: Final answer
    x = 13,136.31

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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.