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Finding the Fourth Proportional to 11,561.74, 15,955.15 and 6,256.65

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Solution

The fourth proportional to 11,561.74, 15,955.15 and 6,256.65 is: 8,634.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,561.74 : 15,955.15 = 6,256.65 : x
  2. Step 2: Convert to fraction form
    11,561.74/15,955.15 = 6,256.65/x
  3. Step 3: Cross multiply
    11,561.74x = 15,955.15 × 6,256.65
  4. Step 4: Simplify right side
    11,561.74x = 99,825,789.25
  5. Step 5: Solve for x
    x = 99,825,789.25/11,561.74
  6. Step 6: Final answer
    x = 8,634.15

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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.