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Finding the Fourth Proportional to 22,605.20, 33,913.20 and 11,513.60

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Solution

The fourth proportional to 22,605.20, 33,913.20 and 11,513.60 is: 17,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,605.20 : 33,913.20 = 11,513.60 : x
  2. Step 2: Convert to fraction form
    22,605.20/33,913.20 = 11,513.60/x
  3. Step 3: Cross multiply
    22,605.20x = 33,913.20 × 11,513.60
  4. Step 4: Simplify right side
    22,605.20x = 390,463,019.52
  5. Step 5: Solve for x
    x = 390,463,019.52/22,605.20
  6. Step 6: Final answer
    x = 17,273.15

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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.