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Finding the Fourth Proportional to 22,405.61, 33,613.47 and 7,412.69

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Solution

The fourth proportional to 22,405.61, 33,613.47 and 7,412.69 is: 11,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,405.61 : 33,613.47 = 7,412.69 : x
  2. Step 2: Convert to fraction form
    22,405.61/33,613.47 = 7,412.69/x
  3. Step 3: Cross multiply
    22,405.61x = 33,613.47 × 7,412.69
  4. Step 4: Simplify right side
    22,405.61x = 249,166,163.12
  5. Step 5: Solve for x
    x = 249,166,163.12/22,405.61
  6. Step 6: Final answer
    x = 11,120.71

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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.