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Finding the Fourth Proportional to 18,967.23, 26,162.60 and 11,515.23

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Solution

The fourth proportional to 18,967.23, 26,162.60 and 11,515.23 is: 15,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.23 : 26,162.60 = 11,515.23 : x
  2. Step 2: Convert to fraction form
    18,967.23/26,162.60 = 11,515.23/x
  3. Step 3: Cross multiply
    18,967.23x = 26,162.60 × 11,515.23
  4. Step 4: Simplify right side
    18,967.23x = 301,268,298.82
  5. Step 5: Solve for x
    x = 301,268,298.82/18,967.23
  6. Step 6: Final answer
    x = 15,883.62

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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.