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Finding the Fourth Proportional to 7,656.67, 11,485.05 and 3,039.67

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Solution

The fourth proportional to 7,656.67, 11,485.05 and 3,039.67 is: 4,559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,656.67 : 11,485.05 = 3,039.67 : x
  2. Step 2: Convert to fraction form
    7,656.67/11,485.05 = 3,039.67/x
  3. Step 3: Cross multiply
    7,656.67x = 11,485.05 × 3,039.67
  4. Step 4: Simplify right side
    7,656.67x = 34,910,761.93
  5. Step 5: Solve for x
    x = 34,910,761.93/7,656.67
  6. Step 6: Final answer
    x = 4,559.52

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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.