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Finding the Fourth Proportional to 13,498.88, 20,251.55 and 4,264.88

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Solution

The fourth proportional to 13,498.88, 20,251.55 and 4,264.88 is: 6,398.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.88 : 20,251.55 = 4,264.88 : x
  2. Step 2: Convert to fraction form
    13,498.88/20,251.55 = 4,264.88/x
  3. Step 3: Cross multiply
    13,498.88x = 20,251.55 × 4,264.88
  4. Step 4: Simplify right side
    13,498.88x = 86,370,339.97
  5. Step 5: Solve for x
    x = 86,370,339.97/13,498.88
  6. Step 6: Final answer
    x = 6,398.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.