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Finding the Fourth Proportional to 208,896.66, 287,999.01 and 166,019.31

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Solution

The fourth proportional to 208,896.66, 287,999.01 and 166,019.31 is: 228,885.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,896.66 : 287,999.01 = 166,019.31 : x
  2. Step 2: Convert to fraction form
    208,896.66/287,999.01 = 166,019.31/x
  3. Step 3: Cross multiply
    208,896.66x = 287,999.01 × 166,019.31
  4. Step 4: Simplify right side
    208,896.66x = 47,813,396,920.88
  5. Step 5: Solve for x
    x = 47,813,396,920.88/208,896.66
  6. Step 6: Final answer
    x = 228,885.41

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1.5x scale

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.