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Finding the Fourth Proportional to 19,449.70, 26,840.74 and 11,066.74

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Solution

The fourth proportional to 19,449.70, 26,840.74 and 11,066.74 is: 15,272.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,449.70 : 26,840.74 = 11,066.74 : x
  2. Step 2: Convert to fraction form
    19,449.70/26,840.74 = 11,066.74/x
  3. Step 3: Cross multiply
    19,449.70x = 26,840.74 × 11,066.74
  4. Step 4: Simplify right side
    19,449.70x = 297,039,356.78
  5. Step 5: Solve for x
    x = 297,039,356.78/19,449.70
  6. Step 6: Final answer
    x = 15,272.19

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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.