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Finding the Fourth Proportional to 113,813.20, 170,719.80 and 76,488.40

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Solution

The fourth proportional to 113,813.20, 170,719.80 and 76,488.40 is: 114,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,813.20 : 170,719.80 = 76,488.40 : x
  2. Step 2: Convert to fraction form
    113,813.20/170,719.80 = 76,488.40/x
  3. Step 3: Cross multiply
    113,813.20x = 170,719.80 × 76,488.40
  4. Step 4: Simplify right side
    113,813.20x = 13,058,084,350.32
  5. Step 5: Solve for x
    x = 13,058,084,350.32/113,813.20
  6. Step 6: Final answer
    x = 114,732.60

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