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Finding the Fourth Proportional to 67,020.90, 92,486.06 and 36,392.79

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Solution

The fourth proportional to 67,020.90, 92,486.06 and 36,392.79 is: 50,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,020.90 : 92,486.06 = 36,392.79 : x
  2. Step 2: Convert to fraction form
    67,020.90/92,486.06 = 36,392.79/x
  3. Step 3: Cross multiply
    67,020.90x = 92,486.06 × 36,392.79
  4. Step 4: Simplify right side
    67,020.90x = 3,365,826,060.84
  5. Step 5: Solve for x
    x = 3,365,826,060.84/67,020.90
  6. Step 6: Final answer
    x = 50,220.55

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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.