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Finding the Fourth Proportional to 52,920, 79,391.61 and 15,483.24

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Solution

The fourth proportional to 52,920, 79,391.61 and 15,483.24 is: 23,228.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,920 : 79,391.61 = 15,483.24 : x
  2. Step 2: Convert to fraction form
    52,920/79,391.61 = 15,483.24/x
  3. Step 3: Cross multiply
    52,920x = 79,391.61 × 15,483.24
  4. Step 4: Simplify right side
    52,920x = 1,229,239,351.62
  5. Step 5: Solve for x
    x = 1,229,239,351.62/52,920
  6. Step 6: Final answer
    x = 23,228.26

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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.