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Finding the Fourth Proportional to 5,365.80, 7,406.10 and 4,186.44

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Solution

The fourth proportional to 5,365.80, 7,406.10 and 4,186.44 is: 5,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,365.80 : 7,406.10 = 4,186.44 : x
  2. Step 2: Convert to fraction form
    5,365.80/7,406.10 = 4,186.44/x
  3. Step 3: Cross multiply
    5,365.80x = 7,406.10 × 4,186.44
  4. Step 4: Simplify right side
    5,365.80x = 31,005,193.28
  5. Step 5: Solve for x
    x = 31,005,193.28/5,365.80
  6. Step 6: Final answer
    x = 5,778.30

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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.