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Finding the Fourth Proportional to 26,976.84, 40,490.21 and 13,659.20

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Solution

The fourth proportional to 26,976.84, 40,490.21 and 13,659.20 is: 20,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,976.84 : 40,490.21 = 13,659.20 : x
  2. Step 2: Convert to fraction form
    26,976.84/40,490.21 = 13,659.20/x
  3. Step 3: Cross multiply
    26,976.84x = 40,490.21 × 13,659.20
  4. Step 4: Simplify right side
    26,976.84x = 553,063,605.68
  5. Step 5: Solve for x
    x = 553,063,605.68/26,976.84
  6. Step 6: Final answer
    x = 20,501.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.