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Finding the Fourth Proportional to 53,301.22, 79,934.81 and 21,711.22

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Solution

The fourth proportional to 53,301.22, 79,934.81 and 21,711.22 is: 32,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,301.22 : 79,934.81 = 21,711.22 : x
  2. Step 2: Convert to fraction form
    53,301.22/79,934.81 = 21,711.22/x
  3. Step 3: Cross multiply
    53,301.22x = 79,934.81 × 21,711.22
  4. Step 4: Simplify right side
    53,301.22x = 1,735,482,100.01
  5. Step 5: Solve for x
    x = 1,735,482,100.01/53,301.22
  6. Step 6: Final answer
    x = 32,559.90

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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.