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Finding the Fourth Proportional to 22,007.20, 33,010.80 and 20,322.40

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Solution

The fourth proportional to 22,007.20, 33,010.80 and 20,322.40 is: 30,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,007.20 : 33,010.80 = 20,322.40 : x
  2. Step 2: Convert to fraction form
    22,007.20/33,010.80 = 20,322.40/x
  3. Step 3: Cross multiply
    22,007.20x = 33,010.80 × 20,322.40
  4. Step 4: Simplify right side
    22,007.20x = 670,858,681.92
  5. Step 5: Solve for x
    x = 670,858,681.92/22,007.20
  6. Step 6: Final answer
    x = 30,483.60

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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.