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Finding the Fourth Proportional to 57,993.90, 86,989.68 and 18,551.01

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Solution

The fourth proportional to 57,993.90, 86,989.68 and 18,551.01 is: 27,826.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,993.90 : 86,989.68 = 18,551.01 : x
  2. Step 2: Convert to fraction form
    57,993.90/86,989.68 = 18,551.01/x
  3. Step 3: Cross multiply
    57,993.90x = 86,989.68 × 18,551.01
  4. Step 4: Simplify right side
    57,993.90x = 1,613,746,423.58
  5. Step 5: Solve for x
    x = 1,613,746,423.58/57,993.90
  6. Step 6: Final answer
    x = 27,826.14

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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.