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Finding the Fourth Proportional to 7,972.88, 11,005.54 and 5,989.16

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Solution

The fourth proportional to 7,972.88, 11,005.54 and 5,989.16 is: 8,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.88 : 11,005.54 = 5,989.16 : x
  2. Step 2: Convert to fraction form
    7,972.88/11,005.54 = 5,989.16/x
  3. Step 3: Cross multiply
    7,972.88x = 11,005.54 × 5,989.16
  4. Step 4: Simplify right side
    7,972.88x = 65,913,952.49
  5. Step 5: Solve for x
    x = 65,913,952.49/7,972.88
  6. Step 6: Final answer
    x = 8,267.28

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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.