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Finding the Fourth Proportional to 7,709.05, 10,640.54 and 4,353.82

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Solution

The fourth proportional to 7,709.05, 10,640.54 and 4,353.82 is: 6,009.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.05 : 10,640.54 = 4,353.82 : x
  2. Step 2: Convert to fraction form
    7,709.05/10,640.54 = 4,353.82/x
  3. Step 3: Cross multiply
    7,709.05x = 10,640.54 × 4,353.82
  4. Step 4: Simplify right side
    7,709.05x = 46,327,000.70
  5. Step 5: Solve for x
    x = 46,327,000.70/7,709.05
  6. Step 6: Final answer
    x = 6,009.43

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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.