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Finding the Fourth Proportional to 60,910.40, 91,364.52 and 31,310.84

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Solution

The fourth proportional to 60,910.40, 91,364.52 and 31,310.84 is: 46,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,910.40 : 91,364.52 = 31,310.84 : x
  2. Step 2: Convert to fraction form
    60,910.40/91,364.52 = 31,310.84/x
  3. Step 3: Cross multiply
    60,910.40x = 91,364.52 × 31,310.84
  4. Step 4: Simplify right side
    60,910.40x = 2,860,699,867.40
  5. Step 5: Solve for x
    x = 2,860,699,867.40/60,910.40
  6. Step 6: Final answer
    x = 46,965.70

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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.