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Finding the Fourth Proportional to 168,038.32, 231,737.06 and 122,644.44

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Solution

The fourth proportional to 168,038.32, 231,737.06 and 122,644.44 is: 169,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,038.32 : 231,737.06 = 122,644.44 : x
  2. Step 2: Convert to fraction form
    168,038.32/231,737.06 = 122,644.44/x
  3. Step 3: Cross multiply
    168,038.32x = 231,737.06 × 122,644.44
  4. Step 4: Simplify right side
    168,038.32x = 28,421,261,950.95
  5. Step 5: Solve for x
    x = 28,421,261,950.95/168,038.32
  6. Step 6: Final answer
    x = 169,135.60

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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.