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Finding the Fourth Proportional to 109,929.10, 164,893.65 and 65,605.90

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Solution

The fourth proportional to 109,929.10, 164,893.65 and 65,605.90 is: 98,408.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,929.10 : 164,893.65 = 65,605.90 : x
  2. Step 2: Convert to fraction form
    109,929.10/164,893.65 = 65,605.90/x
  3. Step 3: Cross multiply
    109,929.10x = 164,893.65 × 65,605.90
  4. Step 4: Simplify right side
    109,929.10x = 10,817,996,312.54
  5. Step 5: Solve for x
    x = 10,817,996,312.54/109,929.10
  6. Step 6: Final answer
    x = 98,408.85

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