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Finding the Fourth Proportional to 316,435.36, 436,677.43 and 171,237.94

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Solution

The fourth proportional to 316,435.36, 436,677.43 and 171,237.94 is: 236,306.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,435.36 : 436,677.43 = 171,237.94 : x
  2. Step 2: Convert to fraction form
    316,435.36/436,677.43 = 171,237.94/x
  3. Step 3: Cross multiply
    316,435.36x = 436,677.43 × 171,237.94
  4. Step 4: Simplify right side
    316,435.36x = 74,775,743,557.69
  5. Step 5: Solve for x
    x = 74,775,743,557.69/316,435.36
  6. Step 6: Final answer
    x = 236,306.54

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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.