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Finding the Fourth Proportional to 7,698,917.80, 11,548,376.70 and 2,019,716.20

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Solution

The fourth proportional to 7,698,917.80, 11,548,376.70 and 2,019,716.20 is: 3,029,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,698,917.80 : 11,548,376.70 = 2,019,716.20 : x
  2. Step 2: Convert to fraction form
    7,698,917.80/11,548,376.70 = 2,019,716.20/x
  3. Step 3: Cross multiply
    7,698,917.80x = 11,548,376.70 × 2,019,716.20
  4. Step 4: Simplify right side
    7,698,917.80x = 23,324,443,504,692.54
  5. Step 5: Solve for x
    x = 23,324,443,504,692.54/7,698,917.80
  6. Step 6: Final answer
    x = 3,029,574.30

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Double scale
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1.5x scale

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.