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Finding the Fourth Proportional to 504,975.52, 696,880.79 and 278,635.60

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Solution

The fourth proportional to 504,975.52, 696,880.79 and 278,635.60 is: 384,525.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,975.52 : 696,880.79 = 278,635.60 : x
  2. Step 2: Convert to fraction form
    504,975.52/696,880.79 = 278,635.60/x
  3. Step 3: Cross multiply
    504,975.52x = 696,880.79 × 278,635.60
  4. Step 4: Simplify right side
    504,975.52x = 194,175,794,436.64
  5. Step 5: Solve for x
    x = 194,175,794,436.64/504,975.52
  6. Step 6: Final answer
    x = 384,525.17

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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.