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Finding the Fourth Proportional to 73,991.92, 110,987.19 and 31,901.74

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Solution

The fourth proportional to 73,991.92, 110,987.19 and 31,901.74 is: 47,852.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,991.92 : 110,987.19 = 31,901.74 : x
  2. Step 2: Convert to fraction form
    73,991.92/110,987.19 = 31,901.74/x
  3. Step 3: Cross multiply
    73,991.92x = 110,987.19 × 31,901.74
  4. Step 4: Simplify right side
    73,991.92x = 3,540,684,478.71
  5. Step 5: Solve for x
    x = 3,540,684,478.71/73,991.92
  6. Step 6: Final answer
    x = 47,852.31

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1.5x scale

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.