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Finding the Fourth Proportional to 91,063.72, 125,680.26 and 53,353

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Solution

The fourth proportional to 91,063.72, 125,680.26 and 53,353 is: 73,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,063.72 : 125,680.26 = 53,353 : x
  2. Step 2: Convert to fraction form
    91,063.72/125,680.26 = 53,353/x
  3. Step 3: Cross multiply
    91,063.72x = 125,680.26 × 53,353
  4. Step 4: Simplify right side
    91,063.72x = 6,705,418,911.78
  5. Step 5: Solve for x
    x = 6,705,418,911.78/91,063.72
  6. Step 6: Final answer
    x = 73,634.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.