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Finding the Fourth Proportional to 469,915.82, 648,466.45 and 255,051.28

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Solution

The fourth proportional to 469,915.82, 648,466.45 and 255,051.28 is: 351,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,915.82 : 648,466.45 = 255,051.28 : x
  2. Step 2: Convert to fraction form
    469,915.82/648,466.45 = 255,051.28/x
  3. Step 3: Cross multiply
    469,915.82x = 648,466.45 × 255,051.28
  4. Step 4: Simplify right side
    469,915.82x = 165,392,198,109.56
  5. Step 5: Solve for x
    x = 165,392,198,109.56/469,915.82
  6. Step 6: Final answer
    x = 351,961.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.