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Finding the Fourth Proportional to 3,315,756.75, 4,973,634.84 and 919,601.34

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Solution

The fourth proportional to 3,315,756.75, 4,973,634.84 and 919,601.34 is: 1,379,401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,756.75 : 4,973,634.84 = 919,601.34 : x
  2. Step 2: Convert to fraction form
    3,315,756.75/4,973,634.84 = 919,601.34/x
  3. Step 3: Cross multiply
    3,315,756.75x = 4,973,634.84 × 919,601.34
  4. Step 4: Simplify right side
    3,315,756.75x = 4,573,761,263,534.69
  5. Step 5: Solve for x
    x = 4,573,761,263,534.69/3,315,756.75
  6. Step 6: Final answer
    x = 1,379,401.93

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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.