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Finding the Fourth Proportional to 6,652,528.80, 9,978,793.20 and 5,979,370.20

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Solution

The fourth proportional to 6,652,528.80, 9,978,793.20 and 5,979,370.20 is: 8,969,055.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,528.80 : 9,978,793.20 = 5,979,370.20 : x
  2. Step 2: Convert to fraction form
    6,652,528.80/9,978,793.20 = 5,979,370.20/x
  3. Step 3: Cross multiply
    6,652,528.80x = 9,978,793.20 × 5,979,370.20
  4. Step 4: Simplify right side
    6,652,528.80x = 59,666,898,692,042.64
  5. Step 5: Solve for x
    x = 59,666,898,692,042.64/6,652,528.80
  6. Step 6: Final answer
    x = 8,969,055.30

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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.