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Finding the Fourth Proportional to 5,356.73, 7,392.21 and 3,118.70

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Solution

The fourth proportional to 5,356.73, 7,392.21 and 3,118.70 is: 4,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.73 : 7,392.21 = 3,118.70 : x
  2. Step 2: Convert to fraction form
    5,356.73/7,392.21 = 3,118.70/x
  3. Step 3: Cross multiply
    5,356.73x = 7,392.21 × 3,118.70
  4. Step 4: Simplify right side
    5,356.73x = 23,054,085.33
  5. Step 5: Solve for x
    x = 23,054,085.33/5,356.73
  6. Step 6: Final answer
    x = 4,303.76

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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.