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Finding the Fourth Proportional to 4,664,885.70, 6,997,682.70 and 1,589,920.80

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Solution

The fourth proportional to 4,664,885.70, 6,997,682.70 and 1,589,920.80 is: 2,385,001.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,664,885.70 : 6,997,682.70 = 1,589,920.80 : x
  2. Step 2: Convert to fraction form
    4,664,885.70/6,997,682.70 = 1,589,920.80/x
  3. Step 3: Cross multiply
    4,664,885.70x = 6,997,682.70 × 1,589,920.80
  4. Step 4: Simplify right side
    4,664,885.70x = 11,125,761,276,530.16
  5. Step 5: Solve for x
    x = 11,125,761,276,530.16/4,664,885.70
  6. Step 6: Final answer
    x = 2,385,001.90

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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.