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Finding the Fourth Proportional to 19,165.87, 28,740.91 and 7,324.01

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Solution

The fourth proportional to 19,165.87, 28,740.91 and 7,324.01 is: 10,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.87 : 28,740.91 = 7,324.01 : x
  2. Step 2: Convert to fraction form
    19,165.87/28,740.91 = 7,324.01/x
  3. Step 3: Cross multiply
    19,165.87x = 28,740.91 × 7,324.01
  4. Step 4: Simplify right side
    19,165.87x = 210,498,712.25
  5. Step 5: Solve for x
    x = 210,498,712.25/19,165.87
  6. Step 6: Final answer
    x = 10,983.00

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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.