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Finding the Fourth Proportional to 201,620.70, 302,438.22 and 68,483.64

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Solution

The fourth proportional to 201,620.70, 302,438.22 and 68,483.64 is: 102,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,620.70 : 302,438.22 = 68,483.64 : x
  2. Step 2: Convert to fraction form
    201,620.70/302,438.22 = 68,483.64/x
  3. Step 3: Cross multiply
    201,620.70x = 302,438.22 × 68,483.64
  4. Step 4: Simplify right side
    201,620.70x = 20,712,070,180.72
  5. Step 5: Solve for x
    x = 20,712,070,180.72/201,620.70
  6. Step 6: Final answer
    x = 102,727.90

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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.