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Finding the Fourth Proportional to 18,853.84, 25,994.28 and 11,777.68

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Solution

The fourth proportional to 18,853.84, 25,994.28 and 11,777.68 is: 16,238.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.84 : 25,994.28 = 11,777.68 : x
  2. Step 2: Convert to fraction form
    18,853.84/25,994.28 = 11,777.68/x
  3. Step 3: Cross multiply
    18,853.84x = 25,994.28 × 11,777.68
  4. Step 4: Simplify right side
    18,853.84x = 306,152,311.67
  5. Step 5: Solve for x
    x = 306,152,311.67/18,853.84
  6. Step 6: Final answer
    x = 16,238.19

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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.