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Finding the Fourth Proportional to 6,626.56, 9,920.40 and 4,645.30

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Solution

The fourth proportional to 6,626.56, 9,920.40 and 4,645.30 is: 6,954.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.56 : 9,920.40 = 4,645.30 : x
  2. Step 2: Convert to fraction form
    6,626.56/9,920.40 = 4,645.30/x
  3. Step 3: Cross multiply
    6,626.56x = 9,920.40 × 4,645.30
  4. Step 4: Simplify right side
    6,626.56x = 46,083,234.12
  5. Step 5: Solve for x
    x = 46,083,234.12/6,626.56
  6. Step 6: Final answer
    x = 6,954.32

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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.