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Finding the Fourth Proportional to 6,915.96, 9,543.99 and 3,772.14

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Solution

The fourth proportional to 6,915.96, 9,543.99 and 3,772.14 is: 5,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.96 : 9,543.99 = 3,772.14 : x
  2. Step 2: Convert to fraction form
    6,915.96/9,543.99 = 3,772.14/x
  3. Step 3: Cross multiply
    6,915.96x = 9,543.99 × 3,772.14
  4. Step 4: Simplify right side
    6,915.96x = 36,001,266.44
  5. Step 5: Solve for x
    x = 36,001,266.44/6,915.96
  6. Step 6: Final answer
    x = 5,205.53

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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.