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Finding the Fourth Proportional to 482,915.84, 666,390.50 and 268,039

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Solution

The fourth proportional to 482,915.84, 666,390.50 and 268,039 is: 369,875.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,915.84 : 666,390.50 = 268,039 : x
  2. Step 2: Convert to fraction form
    482,915.84/666,390.50 = 268,039/x
  3. Step 3: Cross multiply
    482,915.84x = 666,390.50 × 268,039
  4. Step 4: Simplify right side
    482,915.84x = 178,618,643,229.50
  5. Step 5: Solve for x
    x = 178,618,643,229.50/482,915.84
  6. Step 6: Final answer
    x = 369,875.30

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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.