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Finding the Fourth Proportional to 61,360.92, 92,109.72 and 31,770.81

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Solution

The fourth proportional to 61,360.92, 92,109.72 and 31,770.81 is: 47,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,360.92 : 92,109.72 = 31,770.81 : x
  2. Step 2: Convert to fraction form
    61,360.92/92,109.72 = 31,770.81/x
  3. Step 3: Cross multiply
    61,360.92x = 92,109.72 × 31,770.81
  4. Step 4: Simplify right side
    61,360.92x = 2,926,400,413.27
  5. Step 5: Solve for x
    x = 2,926,400,413.27/61,360.92
  6. Step 6: Final answer
    x = 47,691.60

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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.