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Finding the Fourth Proportional to 19,751.84, 27,264.40 and 11,371.68

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Solution

The fourth proportional to 19,751.84, 27,264.40 and 11,371.68 is: 15,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,751.84 : 27,264.40 = 11,371.68 : x
  2. Step 2: Convert to fraction form
    19,751.84/27,264.40 = 11,371.68/x
  3. Step 3: Cross multiply
    19,751.84x = 27,264.40 × 11,371.68
  4. Step 4: Simplify right side
    19,751.84x = 310,042,032.19
  5. Step 5: Solve for x
    x = 310,042,032.19/19,751.84
  6. Step 6: Final answer
    x = 15,696.87

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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.