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Finding the Fourth Proportional to 7,994,164.60, 11,991,246.90 and 5,558,721.40

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Solution

The fourth proportional to 7,994,164.60, 11,991,246.90 and 5,558,721.40 is: 8,338,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994,164.60 : 11,991,246.90 = 5,558,721.40 : x
  2. Step 2: Convert to fraction form
    7,994,164.60/11,991,246.90 = 5,558,721.40/x
  3. Step 3: Cross multiply
    7,994,164.60x = 11,991,246.90 × 5,558,721.40
  4. Step 4: Simplify right side
    7,994,164.60x = 66,656,000,755,713.66
  5. Step 5: Solve for x
    x = 66,656,000,755,713.66/7,994,164.60
  6. Step 6: Final answer
    x = 8,338,082.10

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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.