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Finding the Fourth Proportional to 5,315,057.80, 7,972,586.70 and 1,476,872.80

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Solution

The fourth proportional to 5,315,057.80, 7,972,586.70 and 1,476,872.80 is: 2,215,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315,057.80 : 7,972,586.70 = 1,476,872.80 : x
  2. Step 2: Convert to fraction form
    5,315,057.80/7,972,586.70 = 1,476,872.80/x
  3. Step 3: Cross multiply
    5,315,057.80x = 7,972,586.70 × 1,476,872.80
  4. Step 4: Simplify right side
    5,315,057.80x = 11,774,496,442,871.76
  5. Step 5: Solve for x
    x = 11,774,496,442,871.76/5,315,057.80
  6. Step 6: Final answer
    x = 2,215,309.20

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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.