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Finding the Fourth Proportional to 316,431.42, 474,651.99 and 126,908.52

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Solution

The fourth proportional to 316,431.42, 474,651.99 and 126,908.52 is: 190,364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,431.42 : 474,651.99 = 126,908.52 : x
  2. Step 2: Convert to fraction form
    316,431.42/474,651.99 = 126,908.52/x
  3. Step 3: Cross multiply
    316,431.42x = 474,651.99 × 126,908.52
  4. Step 4: Simplify right side
    316,431.42x = 60,237,381,565.95
  5. Step 5: Solve for x
    x = 60,237,381,565.95/316,431.42
  6. Step 6: Final answer
    x = 190,364.73

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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.