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Finding the Fourth Proportional to 699,438,777.37, 965,238,947.81 and 381,911,613

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Solution

The fourth proportional to 699,438,777.37, 965,238,947.81 and 381,911,613 is: 527,045,361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,438,777.37 : 965,238,947.81 = 381,911,613 : x
  2. Step 2: Convert to fraction form
    699,438,777.37/965,238,947.81 = 381,911,613/x
  3. Step 3: Cross multiply
    699,438,777.37x = 965,238,947.81 × 381,911,613
  4. Step 4: Simplify right side
    699,438,777.37x = 368,635,963,488,539,904
  5. Step 5: Solve for x
    x = 368,635,963,488,539,904/699,438,777.37
  6. Step 6: Final answer
    x = 527,045,361.82

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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.