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Finding the Fourth Proportional to 976,917.20, 1,465,375.80 and 658,052.60

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Solution

The fourth proportional to 976,917.20, 1,465,375.80 and 658,052.60 is: 987,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,917.20 : 1,465,375.80 = 658,052.60 : x
  2. Step 2: Convert to fraction form
    976,917.20/1,465,375.80 = 658,052.60/x
  3. Step 3: Cross multiply
    976,917.20x = 1,465,375.80 × 658,052.60
  4. Step 4: Simplify right side
    976,917.20x = 964,294,355,167.08
  5. Step 5: Solve for x
    x = 964,294,355,167.08/976,917.20
  6. Step 6: Final answer
    x = 987,078.90

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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.