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Finding the Fourth Proportional to 223,401.56, 308,318.46 and 127,939.64

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Solution

The fourth proportional to 223,401.56, 308,318.46 and 127,939.64 is: 176,570.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,401.56 : 308,318.46 = 127,939.64 : x
  2. Step 2: Convert to fraction form
    223,401.56/308,318.46 = 127,939.64/x
  3. Step 3: Cross multiply
    223,401.56x = 308,318.46 × 127,939.64
  4. Step 4: Simplify right side
    223,401.56x = 39,446,152,777.75
  5. Step 5: Solve for x
    x = 39,446,152,777.75/223,401.56
  6. Step 6: Final answer
    x = 176,570.62

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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.