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Finding the Fourth Proportional to 7,222.61, 9,966.84 and 4,035.27

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Solution

The fourth proportional to 7,222.61, 9,966.84 and 4,035.27 is: 5,568.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.61 : 9,966.84 = 4,035.27 : x
  2. Step 2: Convert to fraction form
    7,222.61/9,966.84 = 4,035.27/x
  3. Step 3: Cross multiply
    7,222.61x = 9,966.84 × 4,035.27
  4. Step 4: Simplify right side
    7,222.61x = 40,218,890.45
  5. Step 5: Solve for x
    x = 40,218,890.45/7,222.61
  6. Step 6: Final answer
    x = 5,568.47

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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.