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Finding the Fourth Proportional to 157,720.40, 236,580.60 and 74,776.40

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Solution

The fourth proportional to 157,720.40, 236,580.60 and 74,776.40 is: 112,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,720.40 : 236,580.60 = 74,776.40 : x
  2. Step 2: Convert to fraction form
    157,720.40/236,580.60 = 74,776.40/x
  3. Step 3: Cross multiply
    157,720.40x = 236,580.60 × 74,776.40
  4. Step 4: Simplify right side
    157,720.40x = 17,690,645,577.84
  5. Step 5: Solve for x
    x = 17,690,645,577.84/157,720.40
  6. Step 6: Final answer
    x = 112,164.60

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