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Finding the Fourth Proportional to 647,726.58, 893,399.85 and 561,531.44

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Solution

The fourth proportional to 647,726.58, 893,399.85 and 561,531.44 is: 774,512.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,726.58 : 893,399.85 = 561,531.44 : x
  2. Step 2: Convert to fraction form
    647,726.58/893,399.85 = 561,531.44/x
  3. Step 3: Cross multiply
    647,726.58x = 893,399.85 × 561,531.44
  4. Step 4: Simplify right side
    647,726.58x = 501,672,099,799.29
  5. Step 5: Solve for x
    x = 501,672,099,799.29/647,726.58
  6. Step 6: Final answer
    x = 774,512.14

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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.