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Finding the Fourth Proportional to 108,691.20, 163,036.80 and 99,014.40

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Solution

The fourth proportional to 108,691.20, 163,036.80 and 99,014.40 is: 148,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,691.20 : 163,036.80 = 99,014.40 : x
  2. Step 2: Convert to fraction form
    108,691.20/163,036.80 = 99,014.40/x
  3. Step 3: Cross multiply
    108,691.20x = 163,036.80 × 99,014.40
  4. Step 4: Simplify right side
    108,691.20x = 16,142,990,929.92
  5. Step 5: Solve for x
    x = 16,142,990,929.92/108,691.20
  6. Step 6: Final answer
    x = 148,521.60

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