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Finding the Fourth Proportional to 114,770.70, 172,156.05 and 85,246.20

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Solution

The fourth proportional to 114,770.70, 172,156.05 and 85,246.20 is: 127,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,770.70 : 172,156.05 = 85,246.20 : x
  2. Step 2: Convert to fraction form
    114,770.70/172,156.05 = 85,246.20/x
  3. Step 3: Cross multiply
    114,770.70x = 172,156.05 × 85,246.20
  4. Step 4: Simplify right side
    114,770.70x = 14,675,649,069.51
  5. Step 5: Solve for x
    x = 14,675,649,069.51/114,770.70
  6. Step 6: Final answer
    x = 127,869.30

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