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Finding the Fourth Proportional to 7,666.88, 11,500.80 and 2,472.96

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Solution

The fourth proportional to 7,666.88, 11,500.80 and 2,472.96 is: 3,709.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.88 : 11,500.80 = 2,472.96 : x
  2. Step 2: Convert to fraction form
    7,666.88/11,500.80 = 2,472.96/x
  3. Step 3: Cross multiply
    7,666.88x = 11,500.80 × 2,472.96
  4. Step 4: Simplify right side
    7,666.88x = 28,441,018.37
  5. Step 5: Solve for x
    x = 28,441,018.37/7,666.88
  6. Step 6: Final answer
    x = 3,709.59

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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.