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Finding the Fourth Proportional to 91,292.40, 136,938.60 and 51,926.40

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Solution

The fourth proportional to 91,292.40, 136,938.60 and 51,926.40 is: 77,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,292.40 : 136,938.60 = 51,926.40 : x
  2. Step 2: Convert to fraction form
    91,292.40/136,938.60 = 51,926.40/x
  3. Step 3: Cross multiply
    91,292.40x = 136,938.60 × 51,926.40
  4. Step 4: Simplify right side
    91,292.40x = 7,110,728,519.04
  5. Step 5: Solve for x
    x = 7,110,728,519.04/91,292.40
  6. Step 6: Final answer
    x = 77,889.60

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