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Finding the Fourth Proportional to 38,991.68, 53,815.20 and 22,224.32

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Solution

The fourth proportional to 38,991.68, 53,815.20 and 22,224.32 is: 30,673.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.68 : 53,815.20 = 22,224.32 : x
  2. Step 2: Convert to fraction form
    38,991.68/53,815.20 = 22,224.32/x
  3. Step 3: Cross multiply
    38,991.68x = 53,815.20 × 22,224.32
  4. Step 4: Simplify right side
    38,991.68x = 1,196,006,225.66
  5. Step 5: Solve for x
    x = 1,196,006,225.66/38,991.68
  6. Step 6: Final answer
    x = 30,673.37

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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.