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Finding the Fourth Proportional to 7,212.16, 9,952.68 and 4,069.36

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Solution

The fourth proportional to 7,212.16, 9,952.68 and 4,069.36 is: 5,615.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.16 : 9,952.68 = 4,069.36 : x
  2. Step 2: Convert to fraction form
    7,212.16/9,952.68 = 4,069.36/x
  3. Step 3: Cross multiply
    7,212.16x = 9,952.68 × 4,069.36
  4. Step 4: Simplify right side
    7,212.16x = 40,501,037.88
  5. Step 5: Solve for x
    x = 40,501,037.88/7,212.16
  6. Step 6: Final answer
    x = 5,615.66

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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.