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Finding the Fourth Proportional to 404,557.20, 606,981.60 and 168,069.60

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Solution

The fourth proportional to 404,557.20, 606,981.60 and 168,069.60 is: 252,164.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,557.20 : 606,981.60 = 168,069.60 : x
  2. Step 2: Convert to fraction form
    404,557.20/606,981.60 = 168,069.60/x
  3. Step 3: Cross multiply
    404,557.20x = 606,981.60 × 168,069.60
  4. Step 4: Simplify right side
    404,557.20x = 102,015,154,719.36
  5. Step 5: Solve for x
    x = 102,015,154,719.36/404,557.20
  6. Step 6: Final answer
    x = 252,164.97

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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.