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Finding the Fourth Proportional to 7,666.74, 10,579.74 and 4,687.56

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Solution

The fourth proportional to 7,666.74, 10,579.74 and 4,687.56 is: 6,468.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.74 : 10,579.74 = 4,687.56 : x
  2. Step 2: Convert to fraction form
    7,666.74/10,579.74 = 4,687.56/x
  3. Step 3: Cross multiply
    7,666.74x = 10,579.74 × 4,687.56
  4. Step 4: Simplify right side
    7,666.74x = 49,593,166.03
  5. Step 5: Solve for x
    x = 49,593,166.03/7,666.74
  6. Step 6: Final answer
    x = 6,468.61

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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.