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Finding the Fourth Proportional to 5,607.80, 7,738.79 and 3,090.17

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Solution

The fourth proportional to 5,607.80, 7,738.79 and 3,090.17 is: 4,264.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.80 : 7,738.79 = 3,090.17 : x
  2. Step 2: Convert to fraction form
    5,607.80/7,738.79 = 3,090.17/x
  3. Step 3: Cross multiply
    5,607.80x = 7,738.79 × 3,090.17
  4. Step 4: Simplify right side
    5,607.80x = 23,914,122.55
  5. Step 5: Solve for x
    x = 23,914,122.55/5,607.80
  6. Step 6: Final answer
    x = 4,264.44

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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.