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Finding the Fourth Proportional to 208,692.65, 287,995.83 and 118,046.66

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Solution

The fourth proportional to 208,692.65, 287,995.83 and 118,046.66 is: 162,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,692.65 : 287,995.83 = 118,046.66 : x
  2. Step 2: Convert to fraction form
    208,692.65/287,995.83 = 118,046.66/x
  3. Step 3: Cross multiply
    208,692.65x = 287,995.83 × 118,046.66
  4. Step 4: Simplify right side
    208,692.65x = 33,996,945,825.43
  5. Step 5: Solve for x
    x = 33,996,945,825.43/208,692.65
  6. Step 6: Final answer
    x = 162,904.38

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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.