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Finding the Fourth Proportional to 316,169.93, 436,324.94 and 172,929.98

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Solution

The fourth proportional to 316,169.93, 436,324.94 and 172,929.98 is: 238,649.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,169.93 : 436,324.94 = 172,929.98 : x
  2. Step 2: Convert to fraction form
    316,169.93/436,324.94 = 172,929.98/x
  3. Step 3: Cross multiply
    316,169.93x = 436,324.94 × 172,929.98
  4. Step 4: Simplify right side
    316,169.93x = 75,453,663,147.70
  5. Step 5: Solve for x
    x = 75,453,663,147.70/316,169.93
  6. Step 6: Final answer
    x = 238,649.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.