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Finding the Fourth Proportional to 211,480.47, 317,239.34 and 59,678.90

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Solution

The fourth proportional to 211,480.47, 317,239.34 and 59,678.90 is: 89,523.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,480.47 : 317,239.34 = 59,678.90 : x
  2. Step 2: Convert to fraction form
    211,480.47/317,239.34 = 59,678.90/x
  3. Step 3: Cross multiply
    211,480.47x = 317,239.34 × 59,678.90
  4. Step 4: Simplify right side
    211,480.47x = 18,932,494,847.93
  5. Step 5: Solve for x
    x = 18,932,494,847.93/211,480.47
  6. Step 6: Final answer
    x = 89,523.61

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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.