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Finding the Fourth Proportional to 6,915.66, 9,540.57 and 4,676.72

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Solution

The fourth proportional to 6,915.66, 9,540.57 and 4,676.72 is: 6,451.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.66 : 9,540.57 = 4,676.72 : x
  2. Step 2: Convert to fraction form
    6,915.66/9,540.57 = 4,676.72/x
  3. Step 3: Cross multiply
    6,915.66x = 9,540.57 × 4,676.72
  4. Step 4: Simplify right side
    6,915.66x = 44,618,526.83
  5. Step 5: Solve for x
    x = 44,618,526.83/6,915.66
  6. Step 6: Final answer
    x = 6,451.81

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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.