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Finding the Fourth Proportional to 18,973.20, 26,172.12 and 11,014.41

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Solution

The fourth proportional to 18,973.20, 26,172.12 and 11,014.41 is: 15,193.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.20 : 26,172.12 = 11,014.41 : x
  2. Step 2: Convert to fraction form
    18,973.20/26,172.12 = 11,014.41/x
  3. Step 3: Cross multiply
    18,973.20x = 26,172.12 × 11,014.41
  4. Step 4: Simplify right side
    18,973.20x = 288,270,460.25
  5. Step 5: Solve for x
    x = 288,270,460.25/18,973.20
  6. Step 6: Final answer
    x = 15,193.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.