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Finding the Fourth Proportional to 8,685.16, 11,994.08 and 8,395.72

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Solution

The fourth proportional to 8,685.16, 11,994.08 and 8,395.72 is: 11,594.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.16 : 11,994.08 = 8,395.72 : x
  2. Step 2: Convert to fraction form
    8,685.16/11,994.08 = 8,395.72/x
  3. Step 3: Cross multiply
    8,685.16x = 11,994.08 × 8,395.72
  4. Step 4: Simplify right side
    8,685.16x = 100,698,937.34
  5. Step 5: Solve for x
    x = 100,698,937.34/8,685.16
  6. Step 6: Final answer
    x = 11,594.37

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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.