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Finding the Fourth Proportional to 88,698.60, 133,047.90 and 87,240.60

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Solution

The fourth proportional to 88,698.60, 133,047.90 and 87,240.60 is: 130,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,698.60 : 133,047.90 = 87,240.60 : x
  2. Step 2: Convert to fraction form
    88,698.60/133,047.90 = 87,240.60/x
  3. Step 3: Cross multiply
    88,698.60x = 133,047.90 × 87,240.60
  4. Step 4: Simplify right side
    88,698.60x = 11,607,178,624.74
  5. Step 5: Solve for x
    x = 11,607,178,624.74/88,698.60
  6. Step 6: Final answer
    x = 130,860.90

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