Home / 53,183.60-79,778.28-19,912.40

Finding the Fourth Proportional to 53,183.60, 79,778.28 and 19,912.40

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Solution

The fourth proportional to 53,183.60, 79,778.28 and 19,912.40 is: 29,869.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,183.60 : 79,778.28 = 19,912.40 : x
  2. Step 2: Convert to fraction form
    53,183.60/79,778.28 = 19,912.40/x
  3. Step 3: Cross multiply
    53,183.60x = 79,778.28 × 19,912.40
  4. Step 4: Simplify right side
    53,183.60x = 1,588,577,022.67
  5. Step 5: Solve for x
    x = 1,588,577,022.67/53,183.60
  6. Step 6: Final answer
    x = 29,869.68

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1.5x scale

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.