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Finding the Fourth Proportional to 91,666.40, 137,499.60 and 70,930.40

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Solution

The fourth proportional to 91,666.40, 137,499.60 and 70,930.40 is: 106,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,666.40 : 137,499.60 = 70,930.40 : x
  2. Step 2: Convert to fraction form
    91,666.40/137,499.60 = 70,930.40/x
  3. Step 3: Cross multiply
    91,666.40x = 137,499.60 × 70,930.40
  4. Step 4: Simplify right side
    91,666.40x = 9,752,901,627.84
  5. Step 5: Solve for x
    x = 9,752,901,627.84/91,666.40
  6. Step 6: Final answer
    x = 106,395.60

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