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Finding the Fourth Proportional to 647,269.81, 893,077.00 and 417,778.49

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Solution

The fourth proportional to 647,269.81, 893,077.00 and 417,778.49 is: 576,434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,269.81 : 893,077.00 = 417,778.49 : x
  2. Step 2: Convert to fraction form
    647,269.81/893,077.00 = 417,778.49/x
  3. Step 3: Cross multiply
    647,269.81x = 893,077.00 × 417,778.49
  4. Step 4: Simplify right side
    647,269.81x = 373,108,361,701.98
  5. Step 5: Solve for x
    x = 373,108,361,701.98/647,269.81
  6. Step 6: Final answer
    x = 576,434.06

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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.