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Finding the Fourth Proportional to 19,458.50, 26,851.23 and 11,499.17

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Solution

The fourth proportional to 19,458.50, 26,851.23 and 11,499.17 is: 15,867.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,458.50 : 26,851.23 = 11,499.17 : x
  2. Step 2: Convert to fraction form
    19,458.50/26,851.23 = 11,499.17/x
  3. Step 3: Cross multiply
    19,458.50x = 26,851.23 × 11,499.17
  4. Step 4: Simplify right side
    19,458.50x = 308,766,724.22
  5. Step 5: Solve for x
    x = 308,766,724.22/19,458.50
  6. Step 6: Final answer
    x = 15,867.97

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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.