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Finding the Fourth Proportional to 15,793.68, 23,690.52 and 5,405.52

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Solution

The fourth proportional to 15,793.68, 23,690.52 and 5,405.52 is: 8,108.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.68 : 23,690.52 = 5,405.52 : x
  2. Step 2: Convert to fraction form
    15,793.68/23,690.52 = 5,405.52/x
  3. Step 3: Cross multiply
    15,793.68x = 23,690.52 × 5,405.52
  4. Step 4: Simplify right side
    15,793.68x = 128,059,579.67
  5. Step 5: Solve for x
    x = 128,059,579.67/15,793.68
  6. Step 6: Final answer
    x = 8,108.28

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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.