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Finding the Fourth Proportional to 220,858.80, 331,341.10 and 71,113.14

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Solution

The fourth proportional to 220,858.80, 331,341.10 and 71,113.14 is: 106,686.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,858.80 : 331,341.10 = 71,113.14 : x
  2. Step 2: Convert to fraction form
    220,858.80/331,341.10 = 71,113.14/x
  3. Step 3: Cross multiply
    220,858.80x = 331,341.10 × 71,113.14
  4. Step 4: Simplify right side
    220,858.80x = 23,562,706,032.05
  5. Step 5: Solve for x
    x = 23,562,706,032.05/220,858.80
  6. Step 6: Final answer
    x = 106,686.74

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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.