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Finding the Fourth Proportional to 100,561.53, 138,782.35 and 62,328.59

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Solution

The fourth proportional to 100,561.53, 138,782.35 and 62,328.59 is: 86,018.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,561.53 : 138,782.35 = 62,328.59 : x
  2. Step 2: Convert to fraction form
    100,561.53/138,782.35 = 62,328.59/x
  3. Step 3: Cross multiply
    100,561.53x = 138,782.35 × 62,328.59
  4. Step 4: Simplify right side
    100,561.53x = 8,650,108,009.17
  5. Step 5: Solve for x
    x = 8,650,108,009.17/100,561.53
  6. Step 6: Final answer
    x = 86,018.07

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