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Finding the Fourth Proportional to 9,931.68, 13,682.52 and 8,173.44

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Solution

The fourth proportional to 9,931.68, 13,682.52 and 8,173.44 is: 11,260.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.68 : 13,682.52 = 8,173.44 : x
  2. Step 2: Convert to fraction form
    9,931.68/13,682.52 = 8,173.44/x
  3. Step 3: Cross multiply
    9,931.68x = 13,682.52 × 8,173.44
  4. Step 4: Simplify right side
    9,931.68x = 111,833,256.27
  5. Step 5: Solve for x
    x = 111,833,256.27/9,931.68
  6. Step 6: Final answer
    x = 11,260.26

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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.