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Finding the Fourth Proportional to 328,399.17, 492,665.48 and 103,794.69

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Solution

The fourth proportional to 328,399.17, 492,665.48 and 103,794.69 is: 155,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,399.17 : 492,665.48 = 103,794.69 : x
  2. Step 2: Convert to fraction form
    328,399.17/492,665.48 = 103,794.69/x
  3. Step 3: Cross multiply
    328,399.17x = 492,665.48 × 103,794.69
  4. Step 4: Simplify right side
    328,399.17x = 51,136,060,251.33
  5. Step 5: Solve for x
    x = 51,136,060,251.33/328,399.17
  6. Step 6: Final answer
    x = 155,713.12

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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.