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Finding the Fourth Proportional to 7,666.21, 11,493.19 and 7,051.15

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Solution

The fourth proportional to 7,666.21, 11,493.19 and 7,051.15 is: 10,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.21 : 11,493.19 = 7,051.15 : x
  2. Step 2: Convert to fraction form
    7,666.21/11,493.19 = 7,051.15/x
  3. Step 3: Cross multiply
    7,666.21x = 11,493.19 × 7,051.15
  4. Step 4: Simplify right side
    7,666.21x = 81,040,206.67
  5. Step 5: Solve for x
    x = 81,040,206.67/7,666.21
  6. Step 6: Final answer
    x = 10,571.09

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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.