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Finding the Fourth Proportional to 379,173.16, 568,721.94 and 98,690.44

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Solution

The fourth proportional to 379,173.16, 568,721.94 and 98,690.44 is: 148,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,173.16 : 568,721.94 = 98,690.44 : x
  2. Step 2: Convert to fraction form
    379,173.16/568,721.94 = 98,690.44/x
  3. Step 3: Cross multiply
    379,173.16x = 568,721.94 × 98,690.44
  4. Step 4: Simplify right side
    379,173.16x = 56,127,418,496.25
  5. Step 5: Solve for x
    x = 56,127,418,496.25/379,173.16
  6. Step 6: Final answer
    x = 148,025.82

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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.