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Finding the Fourth Proportional to 18,296.61, 25,249.35 and 9,913.11

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Solution

The fourth proportional to 18,296.61, 25,249.35 and 9,913.11 is: 13,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,296.61 : 25,249.35 = 9,913.11 : x
  2. Step 2: Convert to fraction form
    18,296.61/25,249.35 = 9,913.11/x
  3. Step 3: Cross multiply
    18,296.61x = 25,249.35 × 9,913.11
  4. Step 4: Simplify right side
    18,296.61x = 250,299,583.98
  5. Step 5: Solve for x
    x = 250,299,583.98/18,296.61
  6. Step 6: Final answer
    x = 13,680.11

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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.