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Finding the Fourth Proportional to 70,521.92, 105,731.04 and 33,611.84

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Solution

The fourth proportional to 70,521.92, 105,731.04 and 33,611.84 is: 50,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,521.92 : 105,731.04 = 33,611.84 : x
  2. Step 2: Convert to fraction form
    70,521.92/105,731.04 = 33,611.84/x
  3. Step 3: Cross multiply
    70,521.92x = 105,731.04 × 33,611.84
  4. Step 4: Simplify right side
    70,521.92x = 3,553,814,799.51
  5. Step 5: Solve for x
    x = 3,553,814,799.51/70,521.92
  6. Step 6: Final answer
    x = 50,393.05

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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.