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Finding the Fourth Proportional to 978,166.60, 1,467,978.90 and 504,608.20

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Solution

The fourth proportional to 978,166.60, 1,467,978.90 and 504,608.20 is: 757,288.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,166.60 : 1,467,978.90 = 504,608.20 : x
  2. Step 2: Convert to fraction form
    978,166.60/1,467,978.90 = 504,608.20/x
  3. Step 3: Cross multiply
    978,166.60x = 1,467,978.90 × 504,608.20
  4. Step 4: Simplify right side
    978,166.60x = 740,754,190,366.98
  5. Step 5: Solve for x
    x = 740,754,190,366.98/978,166.60
  6. Step 6: Final answer
    x = 757,288.37

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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.