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Finding the Fourth Proportional to 269,459,719.20, 404,189,578.80 and 167,423,047.20

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Solution

The fourth proportional to 269,459,719.20, 404,189,578.80 and 167,423,047.20 is: 251,134,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,459,719.20 : 404,189,578.80 = 167,423,047.20 : x
  2. Step 2: Convert to fraction form
    269,459,719.20/404,189,578.80 = 167,423,047.20/x
  3. Step 3: Cross multiply
    269,459,719.20x = 404,189,578.80 × 167,423,047.20
  4. Step 4: Simplify right side
    269,459,719.20x = 67,670,650,929,180,520
  5. Step 5: Solve for x
    x = 67,670,650,929,180,520/269,459,719.20
  6. Step 6: Final answer
    x = 251,134,570.80

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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.