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Finding the Fourth Proportional to 15,282.76, 22,916.57 and 5,420.56

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Solution

The fourth proportional to 15,282.76, 22,916.57 and 5,420.56 is: 8,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.76 : 22,916.57 = 5,420.56 : x
  2. Step 2: Convert to fraction form
    15,282.76/22,916.57 = 5,420.56/x
  3. Step 3: Cross multiply
    15,282.76x = 22,916.57 × 5,420.56
  4. Step 4: Simplify right side
    15,282.76x = 124,220,528.10
  5. Step 5: Solve for x
    x = 124,220,528.10/15,282.76
  6. Step 6: Final answer
    x = 8,128.15

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