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Finding the Fourth Proportional to 69,037.20, 103,404.04 and 57,055.20

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Solution

The fourth proportional to 69,037.20, 103,404.04 and 57,055.20 is: 85,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,037.20 : 103,404.04 = 57,055.20 : x
  2. Step 2: Convert to fraction form
    69,037.20/103,404.04 = 57,055.20/x
  3. Step 3: Cross multiply
    69,037.20x = 103,404.04 × 57,055.20
  4. Step 4: Simplify right side
    69,037.20x = 5,899,738,183.01
  5. Step 5: Solve for x
    x = 5,899,738,183.01/69,037.20
  6. Step 6: Final answer
    x = 85,457.38

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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.