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Finding the Fourth Proportional to 52,951.72, 79,409.95 and 21,353.62

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Solution

The fourth proportional to 52,951.72, 79,409.95 and 21,353.62 is: 32,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,951.72 : 79,409.95 = 21,353.62 : x
  2. Step 2: Convert to fraction form
    52,951.72/79,409.95 = 21,353.62/x
  3. Step 3: Cross multiply
    52,951.72x = 79,409.95 × 21,353.62
  4. Step 4: Simplify right side
    52,951.72x = 1,695,689,896.52
  5. Step 5: Solve for x
    x = 1,695,689,896.52/52,951.72
  6. Step 6: Final answer
    x = 32,023.32

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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.