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Finding the Fourth Proportional to 18,587.37, 27,890.37 and 16,139.01

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Solution

The fourth proportional to 18,587.37, 27,890.37 and 16,139.01 is: 24,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.37 : 27,890.37 = 16,139.01 : x
  2. Step 2: Convert to fraction form
    18,587.37/27,890.37 = 16,139.01/x
  3. Step 3: Cross multiply
    18,587.37x = 27,890.37 × 16,139.01
  4. Step 4: Simplify right side
    18,587.37x = 450,122,960.33
  5. Step 5: Solve for x
    x = 450,122,960.33/18,587.37
  6. Step 6: Final answer
    x = 24,216.60

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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.