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Finding the Fourth Proportional to 443,816.22, 665,724.31 and 368,990.04

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Solution

The fourth proportional to 443,816.22, 665,724.31 and 368,990.04 is: 553,485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,816.22 : 665,724.31 = 368,990.04 : x
  2. Step 2: Convert to fraction form
    443,816.22/665,724.31 = 368,990.04/x
  3. Step 3: Cross multiply
    443,816.22x = 665,724.31 × 368,990.04
  4. Step 4: Simplify right side
    443,816.22x = 245,645,642,387.65
  5. Step 5: Solve for x
    x = 245,645,642,387.65/443,816.22
  6. Step 6: Final answer
    x = 553,485.04

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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.