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Finding the Fourth Proportional to 647,772.68, 893,463.54 and 561,577.58

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Solution

The fourth proportional to 647,772.68, 893,463.54 and 561,577.58 is: 774,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,772.68 : 893,463.54 = 561,577.58 : x
  2. Step 2: Convert to fraction form
    647,772.68/893,463.54 = 561,577.58/x
  3. Step 3: Cross multiply
    647,772.68x = 893,463.54 × 561,577.58
  4. Step 4: Simplify right side
    647,772.68x = 501,749,092,611.43
  5. Step 5: Solve for x
    x = 501,749,092,611.43/647,772.68
  6. Step 6: Final answer
    x = 774,575.88

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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.