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Finding the Fourth Proportional to 18,392.84, 25,392.46 and 14,077.80

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Solution

The fourth proportional to 18,392.84, 25,392.46 and 14,077.80 is: 19,435.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.84 : 25,392.46 = 14,077.80 : x
  2. Step 2: Convert to fraction form
    18,392.84/25,392.46 = 14,077.80/x
  3. Step 3: Cross multiply
    18,392.84x = 25,392.46 × 14,077.80
  4. Step 4: Simplify right side
    18,392.84x = 357,469,973.39
  5. Step 5: Solve for x
    x = 357,469,973.39/18,392.84
  6. Step 6: Final answer
    x = 19,435.28

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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.