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Finding the Fourth Proportional to 52,785, 79,183.98 and 15,849

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Solution

The fourth proportional to 52,785, 79,183.98 and 15,849 is: 23,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,785 : 79,183.98 = 15,849 : x
  2. Step 2: Convert to fraction form
    52,785/79,183.98 = 15,849/x
  3. Step 3: Cross multiply
    52,785x = 79,183.98 × 15,849
  4. Step 4: Simplify right side
    52,785x = 1,254,986,899.02
  5. Step 5: Solve for x
    x = 1,254,986,899.02/52,785
  6. Step 6: Final answer
    x = 23,775.45

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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.