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Finding the Fourth Proportional to 208,692.40, 287,995.48 and 118,046.41

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Solution

The fourth proportional to 208,692.40, 287,995.48 and 118,046.41 is: 162,904.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,692.40 : 287,995.48 = 118,046.41 : x
  2. Step 2: Convert to fraction form
    208,692.40/287,995.48 = 118,046.41/x
  3. Step 3: Cross multiply
    208,692.40x = 287,995.48 × 118,046.41
  4. Step 4: Simplify right side
    208,692.40x = 33,996,832,510.23
  5. Step 5: Solve for x
    x = 33,996,832,510.23/208,692.40
  6. Step 6: Final answer
    x = 162,904.03

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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.