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Finding the Fourth Proportional to 18,351.84, 25,325.34 and 9,968.28

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Solution

The fourth proportional to 18,351.84, 25,325.34 and 9,968.28 is: 13,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.84 : 25,325.34 = 9,968.28 : x
  2. Step 2: Convert to fraction form
    18,351.84/25,325.34 = 9,968.28/x
  3. Step 3: Cross multiply
    18,351.84x = 25,325.34 × 9,968.28
  4. Step 4: Simplify right side
    18,351.84x = 252,450,080.22
  5. Step 5: Solve for x
    x = 252,450,080.22/18,351.84
  6. Step 6: Final answer
    x = 13,756.12

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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.