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Finding the Fourth Proportional to 19,447.56, 27,018.81 and 19,214.28

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Solution

The fourth proportional to 19,447.56, 27,018.81 and 19,214.28 is: 26,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,447.56 : 27,018.81 = 19,214.28 : x
  2. Step 2: Convert to fraction form
    19,447.56/27,018.81 = 19,214.28/x
  3. Step 3: Cross multiply
    19,447.56x = 27,018.81 × 19,214.28
  4. Step 4: Simplify right side
    19,447.56x = 519,146,980.61
  5. Step 5: Solve for x
    x = 519,146,980.61/19,447.56
  6. Step 6: Final answer
    x = 26,694.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.