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Finding the Fourth Proportional to 18,351.56, 25,325.16 and 9,968.06

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Solution

The fourth proportional to 18,351.56, 25,325.16 and 9,968.06 is: 13,755.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.56 : 25,325.16 = 9,968.06 : x
  2. Step 2: Convert to fraction form
    18,351.56/25,325.16 = 9,968.06/x
  3. Step 3: Cross multiply
    18,351.56x = 25,325.16 × 9,968.06
  4. Step 4: Simplify right side
    18,351.56x = 252,442,740.32
  5. Step 5: Solve for x
    x = 252,442,740.32/18,351.56
  6. Step 6: Final answer
    x = 13,755.93

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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.