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Finding the Fourth Proportional to 6,603,996.60, 9,905,994.90 and 5,659,212.60

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Solution

The fourth proportional to 6,603,996.60, 9,905,994.90 and 5,659,212.60 is: 8,488,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603,996.60 : 9,905,994.90 = 5,659,212.60 : x
  2. Step 2: Convert to fraction form
    6,603,996.60/9,905,994.90 = 5,659,212.60/x
  3. Step 3: Cross multiply
    6,603,996.60x = 9,905,994.90 × 5,659,212.60
  4. Step 4: Simplify right side
    6,603,996.60x = 56,060,131,153,615.74
  5. Step 5: Solve for x
    x = 56,060,131,153,615.74/6,603,996.60
  6. Step 6: Final answer
    x = 8,488,818.90

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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.