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Finding the Fourth Proportional to 95,912.70, 143,869.05 and 86,727.30

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Solution

The fourth proportional to 95,912.70, 143,869.05 and 86,727.30 is: 130,090.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,912.70 : 143,869.05 = 86,727.30 : x
  2. Step 2: Convert to fraction form
    95,912.70/143,869.05 = 86,727.30/x
  3. Step 3: Cross multiply
    95,912.70x = 143,869.05 × 86,727.30
  4. Step 4: Simplify right side
    95,912.70x = 12,477,374,260.07
  5. Step 5: Solve for x
    x = 12,477,374,260.07/95,912.70
  6. Step 6: Final answer
    x = 130,090.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.