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Finding the Fourth Proportional to 30,357.91, 41,896.93 and 22,687.86

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Solution

The fourth proportional to 30,357.91, 41,896.93 and 22,687.86 is: 31,311.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357.91 : 41,896.93 = 22,687.86 : x
  2. Step 2: Convert to fraction form
    30,357.91/41,896.93 = 22,687.86/x
  3. Step 3: Cross multiply
    30,357.91x = 41,896.93 × 22,687.86
  4. Step 4: Simplify right side
    30,357.91x = 950,551,825.20
  5. Step 5: Solve for x
    x = 950,551,825.20/30,357.91
  6. Step 6: Final answer
    x = 31,311.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.