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Finding the Fourth Proportional to 7,265.21, 9,960.68 and 7,133.99

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Solution

The fourth proportional to 7,265.21, 9,960.68 and 7,133.99 is: 9,780.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,265.21 : 9,960.68 = 7,133.99 : x
  2. Step 2: Convert to fraction form
    7,265.21/9,960.68 = 7,133.99/x
  3. Step 3: Cross multiply
    7,265.21x = 9,960.68 × 7,133.99
  4. Step 4: Simplify right side
    7,265.21x = 71,059,359.54
  5. Step 5: Solve for x
    x = 71,059,359.54/7,265.21
  6. Step 6: Final answer
    x = 9,780.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.