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Finding the Fourth Proportional to 7,472.66, 11,208.32 and 2,790.45

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Solution

The fourth proportional to 7,472.66, 11,208.32 and 2,790.45 is: 4,185.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.66 : 11,208.32 = 2,790.45 : x
  2. Step 2: Convert to fraction form
    7,472.66/11,208.32 = 2,790.45/x
  3. Step 3: Cross multiply
    7,472.66x = 11,208.32 × 2,790.45
  4. Step 4: Simplify right side
    7,472.66x = 31,276,256.54
  5. Step 5: Solve for x
    x = 31,276,256.54/7,472.66
  6. Step 6: Final answer
    x = 4,185.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.