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Finding the Fourth Proportional to 5,621.06, 7,757.13 and 3,137.06

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Solution

The fourth proportional to 5,621.06, 7,757.13 and 3,137.06 is: 4,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.06 : 7,757.13 = 3,137.06 : x
  2. Step 2: Convert to fraction form
    5,621.06/7,757.13 = 3,137.06/x
  3. Step 3: Cross multiply
    5,621.06x = 7,757.13 × 3,137.06
  4. Step 4: Simplify right side
    5,621.06x = 24,334,582.24
  5. Step 5: Solve for x
    x = 24,334,582.24/5,621.06
  6. Step 6: Final answer
    x = 4,329.18

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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.