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Finding the Fourth Proportional to 18,574.60, 25,635.06 and 10,191.88

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Solution

The fourth proportional to 18,574.60, 25,635.06 and 10,191.88 is: 14,065.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.60 : 25,635.06 = 10,191.88 : x
  2. Step 2: Convert to fraction form
    18,574.60/25,635.06 = 10,191.88/x
  3. Step 3: Cross multiply
    18,574.60x = 25,635.06 × 10,191.88
  4. Step 4: Simplify right side
    18,574.60x = 261,269,455.31
  5. Step 5: Solve for x
    x = 261,269,455.31/18,574.60
  6. Step 6: Final answer
    x = 14,065.95

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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.