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Finding the Fourth Proportional to 19,279.76, 26,606.76 and 11,826.32

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Solution

The fourth proportional to 19,279.76, 26,606.76 and 11,826.32 is: 16,320.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.76 : 26,606.76 = 11,826.32 : x
  2. Step 2: Convert to fraction form
    19,279.76/26,606.76 = 11,826.32/x
  3. Step 3: Cross multiply
    19,279.76x = 26,606.76 × 11,826.32
  4. Step 4: Simplify right side
    19,279.76x = 314,660,057.92
  5. Step 5: Solve for x
    x = 314,660,057.92/19,279.76
  6. Step 6: Final answer
    x = 16,320.75

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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.