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Finding the Fourth Proportional to 5,012.96, 6,915.60 and 2,915.96

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Solution

The fourth proportional to 5,012.96, 6,915.60 and 2,915.96 is: 4,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.96 : 6,915.60 = 2,915.96 : x
  2. Step 2: Convert to fraction form
    5,012.96/6,915.60 = 2,915.96/x
  3. Step 3: Cross multiply
    5,012.96x = 6,915.60 × 2,915.96
  4. Step 4: Simplify right side
    5,012.96x = 20,165,612.98
  5. Step 5: Solve for x
    x = 20,165,612.98/5,012.96
  6. Step 6: Final answer
    x = 4,022.70

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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.