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Finding the Fourth Proportional to 10,999.70, 16,456.35 and 9,962.90

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Solution

The fourth proportional to 10,999.70, 16,456.35 and 9,962.90 is: 14,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.70 : 16,456.35 = 9,962.90 : x
  2. Step 2: Convert to fraction form
    10,999.70/16,456.35 = 9,962.90/x
  3. Step 3: Cross multiply
    10,999.70x = 16,456.35 × 9,962.90
  4. Step 4: Simplify right side
    10,999.70x = 163,952,969.42
  5. Step 5: Solve for x
    x = 163,952,969.42/10,999.70
  6. Step 6: Final answer
    x = 14,905.22

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