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Finding the Fourth Proportional to 53,354.52, 80,035.90 and 15,911.74

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Solution

The fourth proportional to 53,354.52, 80,035.90 and 15,911.74 is: 23,868.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,354.52 : 80,035.90 = 15,911.74 : x
  2. Step 2: Convert to fraction form
    53,354.52/80,035.90 = 15,911.74/x
  3. Step 3: Cross multiply
    53,354.52x = 80,035.90 × 15,911.74
  4. Step 4: Simplify right side
    53,354.52x = 1,273,510,431.47
  5. Step 5: Solve for x
    x = 1,273,510,431.47/53,354.52
  6. Step 6: Final answer
    x = 23,868.84

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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.