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Finding the Fourth Proportional to 15,172.54, 22,764.15 and 7,780.48

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Solution

The fourth proportional to 15,172.54, 22,764.15 and 7,780.48 is: 11,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.54 : 22,764.15 = 7,780.48 : x
  2. Step 2: Convert to fraction form
    15,172.54/22,764.15 = 7,780.48/x
  3. Step 3: Cross multiply
    15,172.54x = 22,764.15 × 7,780.48
  4. Step 4: Simplify right side
    15,172.54x = 177,116,013.79
  5. Step 5: Solve for x
    x = 177,116,013.79/15,172.54
  6. Step 6: Final answer
    x = 11,673.46

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