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Finding the Fourth Proportional to 479,195.10, 718,878.72 and 163,578.21

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Solution

The fourth proportional to 479,195.10, 718,878.72 and 163,578.21 is: 245,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,195.10 : 718,878.72 = 163,578.21 : x
  2. Step 2: Convert to fraction form
    479,195.10/718,878.72 = 163,578.21/x
  3. Step 3: Cross multiply
    479,195.10x = 718,878.72 × 163,578.21
  4. Step 4: Simplify right side
    479,195.10x = 117,592,894,224.69
  5. Step 5: Solve for x
    x = 117,592,894,224.69/479,195.10
  6. Step 6: Final answer
    x = 245,396.70

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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.