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Finding the Fourth Proportional to 11,275.42, 16,917.02 and 5,039.74

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Solution

The fourth proportional to 11,275.42, 16,917.02 and 5,039.74 is: 7,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,275.42 : 16,917.02 = 5,039.74 : x
  2. Step 2: Convert to fraction form
    11,275.42/16,917.02 = 5,039.74/x
  3. Step 3: Cross multiply
    11,275.42x = 16,917.02 × 5,039.74
  4. Step 4: Simplify right side
    11,275.42x = 85,257,382.37
  5. Step 5: Solve for x
    x = 85,257,382.37/11,275.42
  6. Step 6: Final answer
    x = 7,561.35

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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.