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Finding the Fourth Proportional to 13,510.81, 18,643.49 and 7,844.45

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Solution

The fourth proportional to 13,510.81, 18,643.49 and 7,844.45 is: 10,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.81 : 18,643.49 = 7,844.45 : x
  2. Step 2: Convert to fraction form
    13,510.81/18,643.49 = 7,844.45/x
  3. Step 3: Cross multiply
    13,510.81x = 18,643.49 × 7,844.45
  4. Step 4: Simplify right side
    13,510.81x = 146,247,831.91
  5. Step 5: Solve for x
    x = 146,247,831.91/13,510.81
  6. Step 6: Final answer
    x = 10,824.51

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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.