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Finding the Fourth Proportional to 328,361.52, 492,570.23 and 103,661.85

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Solution

The fourth proportional to 328,361.52, 492,570.23 and 103,661.85 is: 155,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,361.52 : 492,570.23 = 103,661.85 : x
  2. Step 2: Convert to fraction form
    328,361.52/492,570.23 = 103,661.85/x
  3. Step 3: Cross multiply
    328,361.52x = 492,570.23 × 103,661.85
  4. Step 4: Simplify right side
    328,361.52x = 51,060,741,296.73
  5. Step 5: Solve for x
    x = 51,060,741,296.73/328,361.52
  6. Step 6: Final answer
    x = 155,501.60

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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.