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Finding the Fourth Proportional to 1,405,941, 1,940,234.64 and 862,377.12

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Solution

The fourth proportional to 1,405,941, 1,940,234.64 and 862,377.12 is: 1,190,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,941 : 1,940,234.64 = 862,377.12 : x
  2. Step 2: Convert to fraction form
    1,405,941/1,940,234.64 = 862,377.12/x
  3. Step 3: Cross multiply
    1,405,941x = 1,940,234.64 × 862,377.12
  4. Step 4: Simplify right side
    1,405,941x = 1,673,213,960,967.44
  5. Step 5: Solve for x
    x = 1,673,213,960,967.44/1,405,941
  6. Step 6: Final answer
    x = 1,190,102.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.