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Finding the Fourth Proportional to 58,611.88, 87,917.82 and 38,928.88

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Solution

The fourth proportional to 58,611.88, 87,917.82 and 38,928.88 is: 58,393.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,611.88 : 87,917.82 = 38,928.88 : x
  2. Step 2: Convert to fraction form
    58,611.88/87,917.82 = 38,928.88/x
  3. Step 3: Cross multiply
    58,611.88x = 87,917.82 × 38,928.88
  4. Step 4: Simplify right side
    58,611.88x = 3,422,542,264.64
  5. Step 5: Solve for x
    x = 3,422,542,264.64/58,611.88
  6. Step 6: Final answer
    x = 58,393.32

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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.