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Finding the Fourth Proportional to 5,559.32, 7,631.01 and 4,915.76

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Solution

The fourth proportional to 5,559.32, 7,631.01 and 4,915.76 is: 6,747.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,559.32 : 7,631.01 = 4,915.76 : x
  2. Step 2: Convert to fraction form
    5,559.32/7,631.01 = 4,915.76/x
  3. Step 3: Cross multiply
    5,559.32x = 7,631.01 × 4,915.76
  4. Step 4: Simplify right side
    5,559.32x = 37,512,175.56
  5. Step 5: Solve for x
    x = 37,512,175.56/5,559.32
  6. Step 6: Final answer
    x = 6,747.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.