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Finding the Fourth Proportional to 27,171.70, 37,484.19 and 19,218.31

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Solution

The fourth proportional to 27,171.70, 37,484.19 and 19,218.31 is: 26,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,171.70 : 37,484.19 = 19,218.31 : x
  2. Step 2: Convert to fraction form
    27,171.70/37,484.19 = 19,218.31/x
  3. Step 3: Cross multiply
    27,171.70x = 37,484.19 × 19,218.31
  4. Step 4: Simplify right side
    27,171.70x = 720,382,954.71
  5. Step 5: Solve for x
    x = 720,382,954.71/27,171.70
  6. Step 6: Final answer
    x = 26,512.25

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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.