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Finding the Fourth Proportional to 61,867,486.80, 92,777,610.60 and 18,722,350.80

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Solution

The fourth proportional to 61,867,486.80, 92,777,610.60 and 18,722,350.80 is: 28,076,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,867,486.80 : 92,777,610.60 = 18,722,350.80 : x
  2. Step 2: Convert to fraction form
    61,867,486.80/92,777,610.60 = 18,722,350.80/x
  3. Step 3: Cross multiply
    61,867,486.80x = 92,777,610.60 × 18,722,350.80
  4. Step 4: Simplify right side
    61,867,486.80x = 1,737,014,972,038,998.50
  5. Step 5: Solve for x
    x = 1,737,014,972,038,998.50/61,867,486.80
  6. Step 6: Final answer
    x = 28,076,378.43

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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.