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Finding the Fourth Proportional to 19,659.85, 29,503.47 and 8,560.82

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Solution

The fourth proportional to 19,659.85, 29,503.47 and 8,560.82 is: 12,847.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.85 : 29,503.47 = 8,560.82 : x
  2. Step 2: Convert to fraction form
    19,659.85/29,503.47 = 8,560.82/x
  3. Step 3: Cross multiply
    19,659.85x = 29,503.47 × 8,560.82
  4. Step 4: Simplify right side
    19,659.85x = 252,573,896.05
  5. Step 5: Solve for x
    x = 252,573,896.05/19,659.85
  6. Step 6: Final answer
    x = 12,847.19

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1.5x scale

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.