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Finding the Fourth Proportional to 426,084.26, 639,125.57 and 248,466.71

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Solution

The fourth proportional to 426,084.26, 639,125.57 and 248,466.71 is: 372,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,084.26 : 639,125.57 = 248,466.71 : x
  2. Step 2: Convert to fraction form
    426,084.26/639,125.57 = 248,466.71/x
  3. Step 3: Cross multiply
    426,084.26x = 639,125.57 × 248,466.71
  4. Step 4: Simplify right side
    426,084.26x = 158,801,429,873.76
  5. Step 5: Solve for x
    x = 158,801,429,873.76/426,084.26
  6. Step 6: Final answer
    x = 372,699.60

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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.