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Finding the Fourth Proportional to 638,954.10, 957,617.10 and 339,578.10

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Solution

The fourth proportional to 638,954.10, 957,617.10 and 339,578.10 is: 508,934.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,954.10 : 957,617.10 = 339,578.10 : x
  2. Step 2: Convert to fraction form
    638,954.10/957,617.10 = 339,578.10/x
  3. Step 3: Cross multiply
    638,954.10x = 957,617.10 × 339,578.10
  4. Step 4: Simplify right side
    638,954.10x = 325,185,795,345.51
  5. Step 5: Solve for x
    x = 325,185,795,345.51/638,954.10
  6. Step 6: Final answer
    x = 508,934.52

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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.