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Finding the Fourth Proportional to 18,152.13, 25,055.16 and 10,982.07

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Solution

The fourth proportional to 18,152.13, 25,055.16 and 10,982.07 is: 15,158.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,152.13 : 25,055.16 = 10,982.07 : x
  2. Step 2: Convert to fraction form
    18,152.13/25,055.16 = 10,982.07/x
  3. Step 3: Cross multiply
    18,152.13x = 25,055.16 × 10,982.07
  4. Step 4: Simplify right side
    18,152.13x = 275,157,520.98
  5. Step 5: Solve for x
    x = 275,157,520.98/18,152.13
  6. Step 6: Final answer
    x = 15,158.42

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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.