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Finding the Fourth Proportional to 61,291.89, 92,121.30 and 50,830.74

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Solution

The fourth proportional to 61,291.89, 92,121.30 and 50,830.74 is: 76,398.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,291.89 : 92,121.30 = 50,830.74 : x
  2. Step 2: Convert to fraction form
    61,291.89/92,121.30 = 50,830.74/x
  3. Step 3: Cross multiply
    61,291.89x = 92,121.30 × 50,830.74
  4. Step 4: Simplify right side
    61,291.89x = 4,682,593,848.76
  5. Step 5: Solve for x
    x = 4,682,593,848.76/61,291.89
  6. Step 6: Final answer
    x = 76,398.26

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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.