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Finding the Fourth Proportional to 6,673.62, 9,213.12 and 5,178.18

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Solution

The fourth proportional to 6,673.62, 9,213.12 and 5,178.18 is: 7,148.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,673.62 : 9,213.12 = 5,178.18 : x
  2. Step 2: Convert to fraction form
    6,673.62/9,213.12 = 5,178.18/x
  3. Step 3: Cross multiply
    6,673.62x = 9,213.12 × 5,178.18
  4. Step 4: Simplify right side
    6,673.62x = 47,707,193.72
  5. Step 5: Solve for x
    x = 47,707,193.72/6,673.62
  6. Step 6: Final answer
    x = 7,148.62

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Double 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.