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Finding the Fourth Proportional to 213,162.06, 319,743.11 and 63,404.51

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Solution

The fourth proportional to 213,162.06, 319,743.11 and 63,404.51 is: 95,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,162.06 : 319,743.11 = 63,404.51 : x
  2. Step 2: Convert to fraction form
    213,162.06/319,743.11 = 63,404.51/x
  3. Step 3: Cross multiply
    213,162.06x = 319,743.11 × 63,404.51
  4. Step 4: Simplify right side
    213,162.06x = 20,273,153,775.22
  5. Step 5: Solve for x
    x = 20,273,153,775.22/213,162.06
  6. Step 6: Final answer
    x = 95,106.76

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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.