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Finding the Fourth Proportional to 269,140.65, 403,773.51 and 91,649.20

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Solution

The fourth proportional to 269,140.65, 403,773.51 and 91,649.20 is: 137,495.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,140.65 : 403,773.51 = 91,649.20 : x
  2. Step 2: Convert to fraction form
    269,140.65/403,773.51 = 91,649.20/x
  3. Step 3: Cross multiply
    269,140.65x = 403,773.51 × 91,649.20
  4. Step 4: Simplify right side
    269,140.65x = 37,005,517,612.88
  5. Step 5: Solve for x
    x = 37,005,517,612.88/269,140.65
  6. Step 6: Final answer
    x = 137,495.09

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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.