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Finding the Fourth Proportional to 9,351.64, 12,900.81 and 5,572.63

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Solution

The fourth proportional to 9,351.64, 12,900.81 and 5,572.63 is: 7,687.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,351.64 : 12,900.81 = 5,572.63 : x
  2. Step 2: Convert to fraction form
    9,351.64/12,900.81 = 5,572.63/x
  3. Step 3: Cross multiply
    9,351.64x = 12,900.81 × 5,572.63
  4. Step 4: Simplify right side
    9,351.64x = 71,891,440.83
  5. Step 5: Solve for x
    x = 71,891,440.83/9,351.64
  6. Step 6: Final answer
    x = 7,687.58

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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.