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Finding the Fourth Proportional to 82,404.40, 123,606.60 and 29,815.60

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Solution

The fourth proportional to 82,404.40, 123,606.60 and 29,815.60 is: 44,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,404.40 : 123,606.60 = 29,815.60 : x
  2. Step 2: Convert to fraction form
    82,404.40/123,606.60 = 29,815.60/x
  3. Step 3: Cross multiply
    82,404.40x = 123,606.60 × 29,815.60
  4. Step 4: Simplify right side
    82,404.40x = 3,685,404,942.96
  5. Step 5: Solve for x
    x = 3,685,404,942.96/82,404.40
  6. Step 6: Final answer
    x = 44,723.40

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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.