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Finding the Fourth Proportional to 61,313.63, 91,920.35 and 31,739.99

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Solution

The fourth proportional to 61,313.63, 91,920.35 and 31,739.99 is: 47,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,313.63 : 91,920.35 = 31,739.99 : x
  2. Step 2: Convert to fraction form
    61,313.63/91,920.35 = 31,739.99/x
  3. Step 3: Cross multiply
    61,313.63x = 91,920.35 × 31,739.99
  4. Step 4: Simplify right side
    61,313.63x = 2,917,550,609.54
  5. Step 5: Solve for x
    x = 2,917,550,609.54/61,313.63
  6. Step 6: Final answer
    x = 47,584.05

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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.