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Finding the Fourth Proportional to 7,978,370.63, 11,967,556.21 and 1,994,738.63

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Solution

The fourth proportional to 7,978,370.63, 11,967,556.21 and 1,994,738.63 is: 2,992,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,370.63 : 11,967,556.21 = 1,994,738.63 : x
  2. Step 2: Convert to fraction form
    7,978,370.63/11,967,556.21 = 1,994,738.63/x
  3. Step 3: Cross multiply
    7,978,370.63x = 11,967,556.21 × 1,994,738.63
  4. Step 4: Simplify right side
    7,978,370.63x = 23,872,146,613,958.77
  5. Step 5: Solve for x
    x = 23,872,146,613,958.77/7,978,370.63
  6. Step 6: Final answer
    x = 2,992,108.01

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Double scale
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Similar ratio
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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.