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Finding the Fourth Proportional to 8,613.53, 11,887.97 and 5,258.30

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Solution

The fourth proportional to 8,613.53, 11,887.97 and 5,258.30 is: 7,257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.53 : 11,887.97 = 5,258.30 : x
  2. Step 2: Convert to fraction form
    8,613.53/11,887.97 = 5,258.30/x
  3. Step 3: Cross multiply
    8,613.53x = 11,887.97 × 5,258.30
  4. Step 4: Simplify right side
    8,613.53x = 62,510,512.65
  5. Step 5: Solve for x
    x = 62,510,512.65/8,613.53
  6. Step 6: Final answer
    x = 7,257.25

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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.