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Finding the Fourth Proportional to 7,472.43, 10,311.95 and 4,115.34

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Solution

The fourth proportional to 7,472.43, 10,311.95 and 4,115.34 is: 5,679.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.43 : 10,311.95 = 4,115.34 : x
  2. Step 2: Convert to fraction form
    7,472.43/10,311.95 = 4,115.34/x
  3. Step 3: Cross multiply
    7,472.43x = 10,311.95 × 4,115.34
  4. Step 4: Simplify right side
    7,472.43x = 42,437,159.74
  5. Step 5: Solve for x
    x = 42,437,159.74/7,472.43
  6. Step 6: Final answer
    x = 5,679.16

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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.