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Finding the Fourth Proportional to 8,574.12, 11,805.97 and 7,505.91

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Solution

The fourth proportional to 8,574.12, 11,805.97 and 7,505.91 is: 10,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.12 : 11,805.97 = 7,505.91 : x
  2. Step 2: Convert to fraction form
    8,574.12/11,805.97 = 7,505.91/x
  3. Step 3: Cross multiply
    8,574.12x = 11,805.97 × 7,505.91
  4. Step 4: Simplify right side
    8,574.12x = 88,614,548.28
  5. Step 5: Solve for x
    x = 88,614,548.28/8,574.12
  6. Step 6: Final answer
    x = 10,335.12

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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.