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Finding the Fourth Proportional to 526,811.34, 726,999.58 and 285,093.90

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Solution

The fourth proportional to 526,811.34, 726,999.58 and 285,093.90 is: 393,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,811.34 : 726,999.58 = 285,093.90 : x
  2. Step 2: Convert to fraction form
    526,811.34/726,999.58 = 285,093.90/x
  3. Step 3: Cross multiply
    526,811.34x = 726,999.58 × 285,093.90
  4. Step 4: Simplify right side
    526,811.34x = 207,263,145,560.56
  5. Step 5: Solve for x
    x = 207,263,145,560.56/526,811.34
  6. Step 6: Final answer
    x = 393,429.54

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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.