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Finding the Fourth Proportional to 19,321.99, 28,985.46 and 5,995.87

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Solution

The fourth proportional to 19,321.99, 28,985.46 and 5,995.87 is: 8,994.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.99 : 28,985.46 = 5,995.87 : x
  2. Step 2: Convert to fraction form
    19,321.99/28,985.46 = 5,995.87/x
  3. Step 3: Cross multiply
    19,321.99x = 28,985.46 × 5,995.87
  4. Step 4: Simplify right side
    19,321.99x = 173,793,050.05
  5. Step 5: Solve for x
    x = 173,793,050.05/19,321.99
  6. Step 6: Final answer
    x = 8,994.57

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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.