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Finding the Fourth Proportional to 172,043.20, 258,064.80 and 45,683.20

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Solution

The fourth proportional to 172,043.20, 258,064.80 and 45,683.20 is: 68,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,043.20 : 258,064.80 = 45,683.20 : x
  2. Step 2: Convert to fraction form
    172,043.20/258,064.80 = 45,683.20/x
  3. Step 3: Cross multiply
    172,043.20x = 258,064.80 × 45,683.20
  4. Step 4: Simplify right side
    172,043.20x = 11,789,225,871.36
  5. Step 5: Solve for x
    x = 11,789,225,871.36/172,043.20
  6. Step 6: Final answer
    x = 68,524.80

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