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Finding the Fourth Proportional to 18,392.84, 25,382.02 and 10,009.32

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Solution

The fourth proportional to 18,392.84, 25,382.02 and 10,009.32 is: 13,812.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.84 : 25,382.02 = 10,009.32 : x
  2. Step 2: Convert to fraction form
    18,392.84/25,382.02 = 10,009.32/x
  3. Step 3: Cross multiply
    18,392.84x = 25,382.02 × 10,009.32
  4. Step 4: Simplify right side
    18,392.84x = 254,056,760.43
  5. Step 5: Solve for x
    x = 254,056,760.43/18,392.84
  6. Step 6: Final answer
    x = 13,812.81

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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.