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Finding the Fourth Proportional to 11,151.51, 15,389.78 and 6,183.51

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Solution

The fourth proportional to 11,151.51, 15,389.78 and 6,183.51 is: 8,533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.51 : 15,389.78 = 6,183.51 : x
  2. Step 2: Convert to fraction form
    11,151.51/15,389.78 = 6,183.51/x
  3. Step 3: Cross multiply
    11,151.51x = 15,389.78 × 6,183.51
  4. Step 4: Simplify right side
    11,151.51x = 95,162,827.61
  5. Step 5: Solve for x
    x = 95,162,827.61/11,151.51
  6. Step 6: Final answer
    x = 8,533.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.