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Finding the Fourth Proportional to 168,605.88, 252,690.79 and 126,152.88

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Solution

The fourth proportional to 168,605.88, 252,690.79 and 126,152.88 is: 189,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,605.88 : 252,690.79 = 126,152.88 : x
  2. Step 2: Convert to fraction form
    168,605.88/252,690.79 = 126,152.88/x
  3. Step 3: Cross multiply
    168,605.88x = 252,690.79 × 126,152.88
  4. Step 4: Simplify right side
    168,605.88x = 31,877,670,907.98
  5. Step 5: Solve for x
    x = 31,877,670,907.98/168,605.88
  6. Step 6: Final answer
    x = 189,066.19

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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.