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Finding the Fourth Proportional to 18,959.29, 26,163.56 and 10,461.20

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Solution

The fourth proportional to 18,959.29, 26,163.56 and 10,461.20 is: 14,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.29 : 26,163.56 = 10,461.20 : x
  2. Step 2: Convert to fraction form
    18,959.29/26,163.56 = 10,461.20/x
  3. Step 3: Cross multiply
    18,959.29x = 26,163.56 × 10,461.20
  4. Step 4: Simplify right side
    18,959.29x = 273,702,129.21
  5. Step 5: Solve for x
    x = 273,702,129.21/18,959.29
  6. Step 6: Final answer
    x = 14,436.31

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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.