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Finding the Fourth Proportional to 548,724.30, 757,268.98 and 306,992.48

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Solution

The fourth proportional to 548,724.30, 757,268.98 and 306,992.48 is: 423,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,724.30 : 757,268.98 = 306,992.48 : x
  2. Step 2: Convert to fraction form
    548,724.30/757,268.98 = 306,992.48/x
  3. Step 3: Cross multiply
    548,724.30x = 757,268.98 × 306,992.48
  4. Step 4: Simplify right side
    548,724.30x = 232,475,882,197.27
  5. Step 5: Solve for x
    x = 232,475,882,197.27/548,724.30
  6. Step 6: Final answer
    x = 423,666.10

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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.