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Finding the Fourth Proportional to 404,647.60, 607,662.60 and 265,025.20

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Solution

The fourth proportional to 404,647.60, 607,662.60 and 265,025.20 is: 397,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,647.60 : 607,662.60 = 265,025.20 : x
  2. Step 2: Convert to fraction form
    404,647.60/607,662.60 = 265,025.20/x
  3. Step 3: Cross multiply
    404,647.60x = 607,662.60 × 265,025.20
  4. Step 4: Simplify right side
    404,647.60x = 161,045,902,097.52
  5. Step 5: Solve for x
    x = 161,045,902,097.52/404,647.60
  6. Step 6: Final answer
    x = 397,990.50

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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.