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Finding the Fourth Proportional to 5,366.55, 7,405.90 and 2,976.56

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Solution

The fourth proportional to 5,366.55, 7,405.90 and 2,976.56 is: 4,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,366.55 : 7,405.90 = 2,976.56 : x
  2. Step 2: Convert to fraction form
    5,366.55/7,405.90 = 2,976.56/x
  3. Step 3: Cross multiply
    5,366.55x = 7,405.90 × 2,976.56
  4. Step 4: Simplify right side
    5,366.55x = 22,044,130.66
  5. Step 5: Solve for x
    x = 22,044,130.66/5,366.55
  6. Step 6: Final answer
    x = 4,107.69

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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.