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Finding the Fourth Proportional to 250,915.82, 376,232.40 and 82,390.32

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Solution

The fourth proportional to 250,915.82, 376,232.40 and 82,390.32 is: 123,539.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,915.82 : 376,232.40 = 82,390.32 : x
  2. Step 2: Convert to fraction form
    250,915.82/376,232.40 = 82,390.32/x
  3. Step 3: Cross multiply
    250,915.82x = 376,232.40 × 82,390.32
  4. Step 4: Simplify right side
    250,915.82x = 30,997,907,830.37
  5. Step 5: Solve for x
    x = 30,997,907,830.37/250,915.82
  6. Step 6: Final answer
    x = 123,539.08

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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.