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Finding the Fourth Proportional to 5,672.30, 7,820.70 and 4,729.46

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Solution

The fourth proportional to 5,672.30, 7,820.70 and 4,729.46 is: 6,520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.30 : 7,820.70 = 4,729.46 : x
  2. Step 2: Convert to fraction form
    5,672.30/7,820.70 = 4,729.46/x
  3. Step 3: Cross multiply
    5,672.30x = 7,820.70 × 4,729.46
  4. Step 4: Simplify right side
    5,672.30x = 36,987,687.82
  5. Step 5: Solve for x
    x = 36,987,687.82/5,672.30
  6. Step 6: Final answer
    x = 6,520.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.