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Finding the Fourth Proportional to 647,791.68, 893,489.76 and 561,596.58

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Solution

The fourth proportional to 647,791.68, 893,489.76 and 561,596.58 is: 774,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,791.68 : 893,489.76 = 561,596.58 : x
  2. Step 2: Convert to fraction form
    647,791.68/893,489.76 = 561,596.58/x
  3. Step 3: Cross multiply
    647,791.68x = 893,489.76 × 561,596.58
  4. Step 4: Simplify right side
    647,791.68x = 501,780,793,481.02
  5. Step 5: Solve for x
    x = 501,780,793,481.02/647,791.68
  6. Step 6: Final answer
    x = 774,602.10

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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.