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Finding the Fourth Proportional to 55,619.70, 83,429.55 and 40,931.70

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Solution

The fourth proportional to 55,619.70, 83,429.55 and 40,931.70 is: 61,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,619.70 : 83,429.55 = 40,931.70 : x
  2. Step 2: Convert to fraction form
    55,619.70/83,429.55 = 40,931.70/x
  3. Step 3: Cross multiply
    55,619.70x = 83,429.55 × 40,931.70
  4. Step 4: Simplify right side
    55,619.70x = 3,414,913,311.74
  5. Step 5: Solve for x
    x = 3,414,913,311.74/55,619.70
  6. Step 6: Final answer
    x = 61,397.55

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