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Finding the Fourth Proportional to 293,691.41, 440,399.51 and 172,148.88

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Solution

The fourth proportional to 293,691.41, 440,399.51 and 172,148.88 is: 258,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,691.41 : 440,399.51 = 172,148.88 : x
  2. Step 2: Convert to fraction form
    293,691.41/440,399.51 = 172,148.88/x
  3. Step 3: Cross multiply
    293,691.41x = 440,399.51 × 172,148.88
  4. Step 4: Simplify right side
    293,691.41x = 75,814,282,399.05
  5. Step 5: Solve for x
    x = 75,814,282,399.05/293,691.41
  6. Step 6: Final answer
    x = 258,142.66

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1.5x scale

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.