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Finding the Fourth Proportional to 303,642.20, 455,158.49 and 103,825.94

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Solution

The fourth proportional to 303,642.20, 455,158.49 and 103,825.94 is: 155,634.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,642.20 : 455,158.49 = 103,825.94 : x
  2. Step 2: Convert to fraction form
    303,642.20/455,158.49 = 103,825.94/x
  3. Step 3: Cross multiply
    303,642.20x = 455,158.49 × 103,825.94
  4. Step 4: Simplify right side
    303,642.20x = 47,257,258,073.23
  5. Step 5: Solve for x
    x = 47,257,258,073.23/303,642.20
  6. Step 6: Final answer
    x = 155,634.68

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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.