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Finding the Fourth Proportional to 223,744.12, 308,697.26 and 126,931.98

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Solution

The fourth proportional to 223,744.12, 308,697.26 and 126,931.98 is: 175,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,744.12 : 308,697.26 = 126,931.98 : x
  2. Step 2: Convert to fraction form
    223,744.12/308,697.26 = 126,931.98/x
  3. Step 3: Cross multiply
    223,744.12x = 308,697.26 × 126,931.98
  4. Step 4: Simplify right side
    223,744.12x = 39,183,554,432.37
  5. Step 5: Solve for x
    x = 39,183,554,432.37/223,744.12
  6. Step 6: Final answer
    x = 175,126.63

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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.