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Finding the Fourth Proportional to 66,961.30, 92,402.43 and 36,740.50

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Solution

The fourth proportional to 66,961.30, 92,402.43 and 36,740.50 is: 50,699.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,961.30 : 92,402.43 = 36,740.50 : x
  2. Step 2: Convert to fraction form
    66,961.30/92,402.43 = 36,740.50/x
  3. Step 3: Cross multiply
    66,961.30x = 92,402.43 × 36,740.50
  4. Step 4: Simplify right side
    66,961.30x = 3,394,911,479.42
  5. Step 5: Solve for x
    x = 3,394,911,479.42/66,961.30
  6. Step 6: Final answer
    x = 50,699.61

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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.