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Finding the Fourth Proportional to 316,656.54, 436,986.68 and 171,463.90

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Solution

The fourth proportional to 316,656.54, 436,986.68 and 171,463.90 is: 236,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,656.54 : 436,986.68 = 171,463.90 : x
  2. Step 2: Convert to fraction form
    316,656.54/436,986.68 = 171,463.90/x
  3. Step 3: Cross multiply
    316,656.54x = 436,986.68 × 171,463.90
  4. Step 4: Simplify right side
    316,656.54x = 74,927,440,400.85
  5. Step 5: Solve for x
    x = 74,927,440,400.85/316,656.54
  6. Step 6: Final answer
    x = 236,620.54

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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.