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Finding the Fourth Proportional to 19,900.28, 27,479 and 17,772.06

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Solution

The fourth proportional to 19,900.28, 27,479 and 17,772.06 is: 24,540.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.28 : 27,479 = 17,772.06 : x
  2. Step 2: Convert to fraction form
    19,900.28/27,479 = 17,772.06/x
  3. Step 3: Cross multiply
    19,900.28x = 27,479 × 17,772.06
  4. Step 4: Simplify right side
    19,900.28x = 488,358,436.74
  5. Step 5: Solve for x
    x = 488,358,436.74/19,900.28
  6. Step 6: Final answer
    x = 24,540.28

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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.