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Finding the Fourth Proportional to 58,051.92, 87,079.80 and 20,611.49

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Solution

The fourth proportional to 58,051.92, 87,079.80 and 20,611.49 is: 30,917.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,051.92 : 87,079.80 = 20,611.49 : x
  2. Step 2: Convert to fraction form
    58,051.92/87,079.80 = 20,611.49/x
  3. Step 3: Cross multiply
    58,051.92x = 87,079.80 × 20,611.49
  4. Step 4: Simplify right side
    58,051.92x = 1,794,843,991.50
  5. Step 5: Solve for x
    x = 1,794,843,991.50/58,051.92
  6. Step 6: Final answer
    x = 30,917.91

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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.