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Finding the Fourth Proportional to 7,910.14, 10,915.18 and 4,552.30

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Solution

The fourth proportional to 7,910.14, 10,915.18 and 4,552.30 is: 6,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.14 : 10,915.18 = 4,552.30 : x
  2. Step 2: Convert to fraction form
    7,910.14/10,915.18 = 4,552.30/x
  3. Step 3: Cross multiply
    7,910.14x = 10,915.18 × 4,552.30
  4. Step 4: Simplify right side
    7,910.14x = 49,689,173.91
  5. Step 5: Solve for x
    x = 49,689,173.91/7,910.14
  6. Step 6: Final answer
    x = 6,281.71

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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.