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Finding the Fourth Proportional to 6,468.64, 8,919.66 and 4,369.12

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Solution

The fourth proportional to 6,468.64, 8,919.66 and 4,369.12 is: 6,024.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.64 : 8,919.66 = 4,369.12 : x
  2. Step 2: Convert to fraction form
    6,468.64/8,919.66 = 4,369.12/x
  3. Step 3: Cross multiply
    6,468.64x = 8,919.66 × 4,369.12
  4. Step 4: Simplify right side
    6,468.64x = 38,971,064.90
  5. Step 5: Solve for x
    x = 38,971,064.90/6,468.64
  6. Step 6: Final answer
    x = 6,024.61

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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.