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Finding the Fourth Proportional to 56,807,586.80, 85,211,380.20 and 47,737,660.40

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Solution

The fourth proportional to 56,807,586.80, 85,211,380.20 and 47,737,660.40 is: 71,606,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,807,586.80 : 85,211,380.20 = 47,737,660.40 : x
  2. Step 2: Convert to fraction form
    56,807,586.80/85,211,380.20 = 47,737,660.40/x
  3. Step 3: Cross multiply
    56,807,586.80x = 85,211,380.20 × 47,737,660.40
  4. Step 4: Simplify right side
    56,807,586.80x = 4,067,791,930,202,884
  5. Step 5: Solve for x
    x = 4,067,791,930,202,884/56,807,586.80
  6. Step 6: Final answer
    x = 71,606,490.60

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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.