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Finding the Fourth Proportional to 317,231.39, 475,877.21 and 114,878.61

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Solution

The fourth proportional to 317,231.39, 475,877.21 and 114,878.61 is: 172,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,231.39 : 475,877.21 = 114,878.61 : x
  2. Step 2: Convert to fraction form
    317,231.39/475,877.21 = 114,878.61/x
  3. Step 3: Cross multiply
    317,231.39x = 475,877.21 × 114,878.61
  4. Step 4: Simplify right side
    317,231.39x = 54,668,111,841.09
  5. Step 5: Solve for x
    x = 54,668,111,841.09/317,231.39
  6. Step 6: Final answer
    x = 172,328.82

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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.