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Finding the Fourth Proportional to 6,638.67, 9,164.40 and 4,725.73

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Solution

The fourth proportional to 6,638.67, 9,164.40 and 4,725.73 is: 6,523.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.67 : 9,164.40 = 4,725.73 : x
  2. Step 2: Convert to fraction form
    6,638.67/9,164.40 = 4,725.73/x
  3. Step 3: Cross multiply
    6,638.67x = 9,164.40 × 4,725.73
  4. Step 4: Simplify right side
    6,638.67x = 43,308,434.19
  5. Step 5: Solve for x
    x = 43,308,434.19/6,638.67
  6. Step 6: Final answer
    x = 6,523.67

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Half scale
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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.