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Finding the Fourth Proportional to 113,498.40, 169,988.40 and 66,842.40

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Solution

The fourth proportional to 113,498.40, 169,988.40 and 66,842.40 is: 100,110.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,498.40 : 169,988.40 = 66,842.40 : x
  2. Step 2: Convert to fraction form
    113,498.40/169,988.40 = 66,842.40/x
  3. Step 3: Cross multiply
    113,498.40x = 169,988.40 × 66,842.40
  4. Step 4: Simplify right side
    113,498.40x = 11,362,432,628.16
  5. Step 5: Solve for x
    x = 11,362,432,628.16/113,498.40
  6. Step 6: Final answer
    x = 100,110.95

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