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Finding the Fourth Proportional to 18,392.31, 25,384.13 and 10,836.23

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Solution

The fourth proportional to 18,392.31, 25,384.13 and 10,836.23 is: 14,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.31 : 25,384.13 = 10,836.23 : x
  2. Step 2: Convert to fraction form
    18,392.31/25,384.13 = 10,836.23/x
  3. Step 3: Cross multiply
    18,392.31x = 25,384.13 × 10,836.23
  4. Step 4: Simplify right side
    18,392.31x = 275,068,153.39
  5. Step 5: Solve for x
    x = 275,068,153.39/18,392.31
  6. Step 6: Final answer
    x = 14,955.60

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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.