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Finding the Fourth Proportional to 85,766.46, 128,613.23 and 35,130.58

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Solution

The fourth proportional to 85,766.46, 128,613.23 and 35,130.58 is: 52,680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,766.46 : 128,613.23 = 35,130.58 : x
  2. Step 2: Convert to fraction form
    85,766.46/128,613.23 = 35,130.58/x
  3. Step 3: Cross multiply
    85,766.46x = 128,613.23 × 35,130.58
  4. Step 4: Simplify right side
    85,766.46x = 4,518,257,365.57
  5. Step 5: Solve for x
    x = 4,518,257,365.57/85,766.46
  6. Step 6: Final answer
    x = 52,680.94

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