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Finding the Fourth Proportional to 18,625.15, 25,713.29 and 14,836.17

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Solution

The fourth proportional to 18,625.15, 25,713.29 and 14,836.17 is: 20,482.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.15 : 25,713.29 = 14,836.17 : x
  2. Step 2: Convert to fraction form
    18,625.15/25,713.29 = 14,836.17/x
  3. Step 3: Cross multiply
    18,625.15x = 25,713.29 × 14,836.17
  4. Step 4: Simplify right side
    18,625.15x = 381,486,730.58
  5. Step 5: Solve for x
    x = 381,486,730.58/18,625.15
  6. Step 6: Final answer
    x = 20,482.35

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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.