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Finding the Fourth Proportional to 269,187.70, 403,295.55 and 156,775.90

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Solution

The fourth proportional to 269,187.70, 403,295.55 and 156,775.90 is: 234,880.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,187.70 : 403,295.55 = 156,775.90 : x
  2. Step 2: Convert to fraction form
    269,187.70/403,295.55 = 156,775.90/x
  3. Step 3: Cross multiply
    269,187.70x = 403,295.55 × 156,775.90
  4. Step 4: Simplify right side
    269,187.70x = 63,227,022,817.25
  5. Step 5: Solve for x
    x = 63,227,022,817.25/269,187.70
  6. Step 6: Final answer
    x = 234,880.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.