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Finding the Fourth Proportional to 647,776.44, 893,468.61 and 561,581.24

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Solution

The fourth proportional to 647,776.44, 893,468.61 and 561,581.24 is: 774,580.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,776.44 : 893,468.61 = 561,581.24 : x
  2. Step 2: Convert to fraction form
    647,776.44/893,468.61 = 561,581.24/x
  3. Step 3: Cross multiply
    647,776.44x = 893,468.61 × 561,581.24
  4. Step 4: Simplify right side
    647,776.44x = 501,755,205,437.53
  5. Step 5: Solve for x
    x = 501,755,205,437.53/647,776.44
  6. Step 6: Final answer
    x = 774,580.82

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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.