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Finding the Fourth Proportional to 15,026.94, 20,731.32 and 8,651.34

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Solution

The fourth proportional to 15,026.94, 20,731.32 and 8,651.34 is: 11,935.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,026.94 : 20,731.32 = 8,651.34 : x
  2. Step 2: Convert to fraction form
    15,026.94/20,731.32 = 8,651.34/x
  3. Step 3: Cross multiply
    15,026.94x = 20,731.32 × 8,651.34
  4. Step 4: Simplify right side
    15,026.94x = 179,353,697.97
  5. Step 5: Solve for x
    x = 179,353,697.97/15,026.94
  6. Step 6: Final answer
    x = 11,935.48

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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.