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Finding the Fourth Proportional to 5,573.49, 7,691.79 and 3,215.79

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Solution

The fourth proportional to 5,573.49, 7,691.79 and 3,215.79 is: 4,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,573.49 : 7,691.79 = 3,215.79 : x
  2. Step 2: Convert to fraction form
    5,573.49/7,691.79 = 3,215.79/x
  3. Step 3: Cross multiply
    5,573.49x = 7,691.79 × 3,215.79
  4. Step 4: Simplify right side
    5,573.49x = 24,735,181.36
  5. Step 5: Solve for x
    x = 24,735,181.36/5,573.49
  6. Step 6: Final answer
    x = 4,438.01

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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.