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Finding the Fourth Proportional to 5,978,687.20, 8,968,030.80 and 2,946,630.40

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Solution

The fourth proportional to 5,978,687.20, 8,968,030.80 and 2,946,630.40 is: 4,419,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,687.20 : 8,968,030.80 = 2,946,630.40 : x
  2. Step 2: Convert to fraction form
    5,978,687.20/8,968,030.80 = 2,946,630.40/x
  3. Step 3: Cross multiply
    5,978,687.20x = 8,968,030.80 × 2,946,630.40
  4. Step 4: Simplify right side
    5,978,687.20x = 26,425,472,183,416.32
  5. Step 5: Solve for x
    x = 26,425,472,183,416.32/5,978,687.20
  6. Step 6: Final answer
    x = 4,419,945.60

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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.