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Finding the Fourth Proportional to 6,652,990.80, 9,984,151.80 and 4,262,648.40

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Solution

The fourth proportional to 6,652,990.80, 9,984,151.80 and 4,262,648.40 is: 6,396,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,990.80 : 9,984,151.80 = 4,262,648.40 : x
  2. Step 2: Convert to fraction form
    6,652,990.80/9,984,151.80 = 4,262,648.40/x
  3. Step 3: Cross multiply
    6,652,990.80x = 9,984,151.80 × 4,262,648.40
  4. Step 4: Simplify right side
    6,652,990.80x = 42,558,928,695,627.12
  5. Step 5: Solve for x
    x = 42,558,928,695,627.12/6,652,990.80
  6. Step 6: Final answer
    x = 6,396,961.90

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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.