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Finding the Fourth Proportional to 496,730.76, 685,469.41 and 281,858.01

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Solution

The fourth proportional to 496,730.76, 685,469.41 and 281,858.01 is: 388,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,730.76 : 685,469.41 = 281,858.01 : x
  2. Step 2: Convert to fraction form
    496,730.76/685,469.41 = 281,858.01/x
  3. Step 3: Cross multiply
    496,730.76x = 685,469.41 × 281,858.01
  4. Step 4: Simplify right side
    496,730.76x = 193,205,043,818.47
  5. Step 5: Solve for x
    x = 193,205,043,818.47/496,730.76
  6. Step 6: Final answer
    x = 388,953.25

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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.