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Finding the Fourth Proportional to 321,968.90, 483,018.15 and 269,740.10

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Solution

The fourth proportional to 321,968.90, 483,018.15 and 269,740.10 is: 404,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,968.90 : 483,018.15 = 269,740.10 : x
  2. Step 2: Convert to fraction form
    321,968.90/483,018.15 = 269,740.10/x
  3. Step 3: Cross multiply
    321,968.90x = 483,018.15 × 269,740.10
  4. Step 4: Simplify right side
    321,968.90x = 130,289,364,082.82
  5. Step 5: Solve for x
    x = 130,289,364,082.82/321,968.90
  6. Step 6: Final answer
    x = 404,664.44

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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.