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Finding the Fourth Proportional to 7,801,976.70, 11,702,965.05 and 7,690,002.30

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Solution

The fourth proportional to 7,801,976.70, 11,702,965.05 and 7,690,002.30 is: 11,535,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801,976.70 : 11,702,965.05 = 7,690,002.30 : x
  2. Step 2: Convert to fraction form
    7,801,976.70/11,702,965.05 = 7,690,002.30/x
  3. Step 3: Cross multiply
    7,801,976.70x = 11,702,965.05 × 7,690,002.30
  4. Step 4: Simplify right side
    7,801,976.70x = 89,995,828,151,319.62
  5. Step 5: Solve for x
    x = 89,995,828,151,319.62/7,801,976.70
  6. Step 6: Final answer
    x = 11,535,003.45

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Double scale
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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.