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Finding the Fourth Proportional to 14,991.40, 22,467.90 and 11,511.40

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Solution

The fourth proportional to 14,991.40, 22,467.90 and 11,511.40 is: 17,252.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.40 : 22,467.90 = 11,511.40 : x
  2. Step 2: Convert to fraction form
    14,991.40/22,467.90 = 11,511.40/x
  3. Step 3: Cross multiply
    14,991.40x = 22,467.90 × 11,511.40
  4. Step 4: Simplify right side
    14,991.40x = 258,636,984.06
  5. Step 5: Solve for x
    x = 258,636,984.06/14,991.40
  6. Step 6: Final answer
    x = 17,252.36

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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.