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Finding the Fourth Proportional to 250,957.36, 376,356.19 and 82,438.58

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Solution

The fourth proportional to 250,957.36, 376,356.19 and 82,438.58 is: 123,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,957.36 : 376,356.19 = 82,438.58 : x
  2. Step 2: Convert to fraction form
    250,957.36/376,356.19 = 82,438.58/x
  3. Step 3: Cross multiply
    250,957.36x = 376,356.19 × 82,438.58
  4. Step 4: Simplify right side
    250,957.36x = 31,026,269,877.81
  5. Step 5: Solve for x
    x = 31,026,269,877.81/250,957.36
  6. Step 6: Final answer
    x = 123,631.64

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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.