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Finding the Fourth Proportional to 201,861.92, 302,840.76 and 61,611.68

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Solution

The fourth proportional to 201,861.92, 302,840.76 and 61,611.68 is: 92,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,861.92 : 302,840.76 = 61,611.68 : x
  2. Step 2: Convert to fraction form
    201,861.92/302,840.76 = 61,611.68/x
  3. Step 3: Cross multiply
    201,861.92x = 302,840.76 × 61,611.68
  4. Step 4: Simplify right side
    201,861.92x = 18,658,527,996.08
  5. Step 5: Solve for x
    x = 18,658,527,996.08/201,861.92
  6. Step 6: Final answer
    x = 92,432.13

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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.