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Finding the Fourth Proportional to 336,218.80, 504,911.40 and 325,721.20

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Solution

The fourth proportional to 336,218.80, 504,911.40 and 325,721.20 is: 489,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,218.80 : 504,911.40 = 325,721.20 : x
  2. Step 2: Convert to fraction form
    336,218.80/504,911.40 = 325,721.20/x
  3. Step 3: Cross multiply
    336,218.80x = 504,911.40 × 325,721.20
  4. Step 4: Simplify right side
    336,218.80x = 164,460,347,101.68
  5. Step 5: Solve for x
    x = 164,460,347,101.68/336,218.80
  6. Step 6: Final answer
    x = 489,146.79

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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.