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Finding the Fourth Proportional to 65,644.17, 90,398.36 and 57,026.43

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Solution

The fourth proportional to 65,644.17, 90,398.36 and 57,026.43 is: 78,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,644.17 : 90,398.36 = 57,026.43 : x
  2. Step 2: Convert to fraction form
    65,644.17/90,398.36 = 57,026.43/x
  3. Step 3: Cross multiply
    65,644.17x = 90,398.36 × 57,026.43
  4. Step 4: Simplify right side
    65,644.17x = 5,155,095,463.52
  5. Step 5: Solve for x
    x = 5,155,095,463.52/65,644.17
  6. Step 6: Final answer
    x = 78,530.90

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