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Finding the Fourth Proportional to 201,788.20, 302,099.10 and 123,056.20

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Solution

The fourth proportional to 201,788.20, 302,099.10 and 123,056.20 is: 184,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,788.20 : 302,099.10 = 123,056.20 : x
  2. Step 2: Convert to fraction form
    201,788.20/302,099.10 = 123,056.20/x
  3. Step 3: Cross multiply
    201,788.20x = 302,099.10 × 123,056.20
  4. Step 4: Simplify right side
    201,788.20x = 37,175,167,269.42
  5. Step 5: Solve for x
    x = 37,175,167,269.42/201,788.20
  6. Step 6: Final answer
    x = 184,228.65

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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.