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Finding the Fourth Proportional to 18,998.74, 28,468.95 and 11,592.10

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Solution

The fourth proportional to 18,998.74, 28,468.95 and 11,592.10 is: 17,370.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.74 : 28,468.95 = 11,592.10 : x
  2. Step 2: Convert to fraction form
    18,998.74/28,468.95 = 11,592.10/x
  3. Step 3: Cross multiply
    18,998.74x = 28,468.95 × 11,592.10
  4. Step 4: Simplify right side
    18,998.74x = 330,014,915.30
  5. Step 5: Solve for x
    x = 330,014,915.30/18,998.74
  6. Step 6: Final answer
    x = 17,370.36

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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.