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Finding the Fourth Proportional to 5,682.85, 7,842.21 and 3,164.98

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Solution

The fourth proportional to 5,682.85, 7,842.21 and 3,164.98 is: 4,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.85 : 7,842.21 = 3,164.98 : x
  2. Step 2: Convert to fraction form
    5,682.85/7,842.21 = 3,164.98/x
  3. Step 3: Cross multiply
    5,682.85x = 7,842.21 × 3,164.98
  4. Step 4: Simplify right side
    5,682.85x = 24,820,437.81
  5. Step 5: Solve for x
    x = 24,820,437.81/5,682.85
  6. Step 6: Final answer
    x = 4,367.60

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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.