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Finding the Fourth Proportional to 489,095.80, 734,008.20 and 252,316.60

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Solution

The fourth proportional to 489,095.80, 734,008.20 and 252,316.60 is: 378,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,095.80 : 734,008.20 = 252,316.60 : x
  2. Step 2: Convert to fraction form
    489,095.80/734,008.20 = 252,316.60/x
  3. Step 3: Cross multiply
    489,095.80x = 734,008.20 × 252,316.60
  4. Step 4: Simplify right side
    489,095.80x = 185,202,453,396.12
  5. Step 5: Solve for x
    x = 185,202,453,396.12/489,095.80
  6. Step 6: Final answer
    x = 378,662.94

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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.