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Finding the Fourth Proportional to 4,906.85, 7,360.27 and 1,985.14

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Solution

The fourth proportional to 4,906.85, 7,360.27 and 1,985.14 is: 2,977.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.85 : 7,360.27 = 1,985.14 : x
  2. Step 2: Convert to fraction form
    4,906.85/7,360.27 = 1,985.14/x
  3. Step 3: Cross multiply
    4,906.85x = 7,360.27 × 1,985.14
  4. Step 4: Simplify right side
    4,906.85x = 14,611,170.63
  5. Step 5: Solve for x
    x = 14,611,170.63/4,906.85
  6. Step 6: Final answer
    x = 2,977.71

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.