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Finding the Fourth Proportional to 8,573.87, 11,805.63 and 7,505.66

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Solution

The fourth proportional to 8,573.87, 11,805.63 and 7,505.66 is: 10,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,573.87 : 11,805.63 = 7,505.66 : x
  2. Step 2: Convert to fraction form
    8,573.87/11,805.63 = 7,505.66/x
  3. Step 3: Cross multiply
    8,573.87x = 11,805.63 × 7,505.66
  4. Step 4: Simplify right side
    8,573.87x = 88,608,985.84
  5. Step 5: Solve for x
    x = 88,608,985.84/8,573.87
  6. Step 6: Final answer
    x = 10,334.78

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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.