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Finding the Fourth Proportional to 8,383.96, 12,577.98 and 3,119.16

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Solution

The fourth proportional to 8,383.96, 12,577.98 and 3,119.16 is: 4,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.96 : 12,577.98 = 3,119.16 : x
  2. Step 2: Convert to fraction form
    8,383.96/12,577.98 = 3,119.16/x
  3. Step 3: Cross multiply
    8,383.96x = 12,577.98 × 3,119.16
  4. Step 4: Simplify right side
    8,383.96x = 39,232,732.10
  5. Step 5: Solve for x
    x = 39,232,732.10/8,383.96
  6. Step 6: Final answer
    x = 4,679.50

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Half scale
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Double scale
Find fourth proportional to 8,384.96, 12,579.48 and 3,120.16
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.