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Finding the Fourth Proportional to 18,893.86, 28,301.91 and 11,098.42

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Solution

The fourth proportional to 18,893.86, 28,301.91 and 11,098.42 is: 16,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.86 : 28,301.91 = 11,098.42 : x
  2. Step 2: Convert to fraction form
    18,893.86/28,301.91 = 11,098.42/x
  3. Step 3: Cross multiply
    18,893.86x = 28,301.91 × 11,098.42
  4. Step 4: Simplify right side
    18,893.86x = 314,106,483.98
  5. Step 5: Solve for x
    x = 314,106,483.98/18,893.86
  6. Step 6: Final answer
    x = 16,624.79

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1.5x scale

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.