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Finding the Fourth Proportional to 22,356.86, 33,509.37 and 21,060.86

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Solution

The fourth proportional to 22,356.86, 33,509.37 and 21,060.86 is: 31,566.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,356.86 : 33,509.37 = 21,060.86 : x
  2. Step 2: Convert to fraction form
    22,356.86/33,509.37 = 21,060.86/x
  3. Step 3: Cross multiply
    22,356.86x = 33,509.37 × 21,060.86
  4. Step 4: Simplify right side
    22,356.86x = 705,736,150.26
  5. Step 5: Solve for x
    x = 705,736,150.26/22,356.86
  6. Step 6: Final answer
    x = 31,566.87

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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.