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Finding the Fourth Proportional to 93,170.76, 128,655.56 and 90,158.04

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Solution

The fourth proportional to 93,170.76, 128,655.56 and 90,158.04 is: 124,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,170.76 : 128,655.56 = 90,158.04 : x
  2. Step 2: Convert to fraction form
    93,170.76/128,655.56 = 90,158.04/x
  3. Step 3: Cross multiply
    93,170.76x = 128,655.56 × 90,158.04
  4. Step 4: Simplify right side
    93,170.76x = 11,599,333,124.70
  5. Step 5: Solve for x
    x = 11,599,333,124.70/93,170.76
  6. Step 6: Final answer
    x = 124,495.42

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