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Finding the Fourth Proportional to 176,428.80, 264,643.20 and 76,636.80

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Solution

The fourth proportional to 176,428.80, 264,643.20 and 76,636.80 is: 114,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,428.80 : 264,643.20 = 76,636.80 : x
  2. Step 2: Convert to fraction form
    176,428.80/264,643.20 = 76,636.80/x
  3. Step 3: Cross multiply
    176,428.80x = 264,643.20 × 76,636.80
  4. Step 4: Simplify right side
    176,428.80x = 20,281,407,989.76
  5. Step 5: Solve for x
    x = 20,281,407,989.76/176,428.80
  6. Step 6: Final answer
    x = 114,955.20

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