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Finding the Fourth Proportional to 404,471.80, 606,780.60 and 167,838.40

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Solution

The fourth proportional to 404,471.80, 606,780.60 and 167,838.40 is: 251,787.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,471.80 : 606,780.60 = 167,838.40 : x
  2. Step 2: Convert to fraction form
    404,471.80/606,780.60 = 167,838.40/x
  3. Step 3: Cross multiply
    404,471.80x = 606,780.60 × 167,838.40
  4. Step 4: Simplify right side
    404,471.80x = 101,841,085,055.04
  5. Step 5: Solve for x
    x = 101,841,085,055.04/404,471.80
  6. Step 6: Final answer
    x = 251,787.85

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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.