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Finding the Fourth Proportional to 98,448.40, 147,672.60 and 90,845.20

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Solution

The fourth proportional to 98,448.40, 147,672.60 and 90,845.20 is: 136,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,448.40 : 147,672.60 = 90,845.20 : x
  2. Step 2: Convert to fraction form
    98,448.40/147,672.60 = 90,845.20/x
  3. Step 3: Cross multiply
    98,448.40x = 147,672.60 × 90,845.20
  4. Step 4: Simplify right side
    98,448.40x = 13,415,346,881.52
  5. Step 5: Solve for x
    x = 13,415,346,881.52/98,448.40
  6. Step 6: Final answer
    x = 136,267.80

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