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Finding the Fourth Proportional to 19,367.60, 29,029.80 and 11,051.60

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Solution

The fourth proportional to 19,367.60, 29,029.80 and 11,051.60 is: 16,565.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367.60 : 29,029.80 = 11,051.60 : x
  2. Step 2: Convert to fraction form
    19,367.60/29,029.80 = 11,051.60/x
  3. Step 3: Cross multiply
    19,367.60x = 29,029.80 × 11,051.60
  4. Step 4: Simplify right side
    19,367.60x = 320,825,737.68
  5. Step 5: Solve for x
    x = 320,825,737.68/19,367.60
  6. Step 6: Final answer
    x = 16,565.07

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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.