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Finding the Fourth Proportional to 8,674.95, 11,965.25 and 5,987.19

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Solution

The fourth proportional to 8,674.95, 11,965.25 and 5,987.19 is: 8,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.95 : 11,965.25 = 5,987.19 : x
  2. Step 2: Convert to fraction form
    8,674.95/11,965.25 = 5,987.19/x
  3. Step 3: Cross multiply
    8,674.95x = 11,965.25 × 5,987.19
  4. Step 4: Simplify right side
    8,674.95x = 71,638,195.21
  5. Step 5: Solve for x
    x = 71,638,195.21/8,674.95
  6. Step 6: Final answer
    x = 8,258.05

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Half scale
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Double scale
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Similar ratio
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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.