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Finding the Fourth Proportional to 622,992.89, 859,730.70 and 336,513.20

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Solution

The fourth proportional to 622,992.89, 859,730.70 and 336,513.20 is: 464,388.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,992.89 : 859,730.70 = 336,513.20 : x
  2. Step 2: Convert to fraction form
    622,992.89/859,730.70 = 336,513.20/x
  3. Step 3: Cross multiply
    622,992.89x = 859,730.70 × 336,513.20
  4. Step 4: Simplify right side
    622,992.89x = 289,310,724,696.59
  5. Step 5: Solve for x
    x = 289,310,724,696.59/622,992.89
  6. Step 6: Final answer
    x = 464,388.49

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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.