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Finding the Fourth Proportional to 5,777,745.52, 7,975,863.84 and 3,818,803.45

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Solution

The fourth proportional to 5,777,745.52, 7,975,863.84 and 3,818,803.45 is: 5,271,650.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,777,745.52 : 7,975,863.84 = 3,818,803.45 : x
  2. Step 2: Convert to fraction form
    5,777,745.52/7,975,863.84 = 3,818,803.45/x
  3. Step 3: Cross multiply
    5,777,745.52x = 7,975,863.84 × 3,818,803.45
  4. Step 4: Simplify right side
    5,777,745.52x = 30,458,256,348,922.25
  5. Step 5: Solve for x
    x = 30,458,256,348,922.25/5,777,745.52
  6. Step 6: Final answer
    x = 5,271,650.72

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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.