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Finding the Fourth Proportional to 5,418.36, 7,470.36 and 5,344.92

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Solution

The fourth proportional to 5,418.36, 7,470.36 and 5,344.92 is: 7,369.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.36 : 7,470.36 = 5,344.92 : x
  2. Step 2: Convert to fraction form
    5,418.36/7,470.36 = 5,344.92/x
  3. Step 3: Cross multiply
    5,418.36x = 7,470.36 × 5,344.92
  4. Step 4: Simplify right side
    5,418.36x = 39,928,476.57
  5. Step 5: Solve for x
    x = 39,928,476.57/5,418.36
  6. Step 6: Final answer
    x = 7,369.11

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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.