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Finding the Fourth Proportional to 638,888.85, 957,519.23 and 339,512.85

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Solution

The fourth proportional to 638,888.85, 957,519.23 and 339,512.85 is: 508,836.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,888.85 : 957,519.23 = 339,512.85 : x
  2. Step 2: Convert to fraction form
    638,888.85/957,519.23 = 339,512.85/x
  3. Step 3: Cross multiply
    638,888.85x = 957,519.23 × 339,512.85
  4. Step 4: Simplify right side
    638,888.85x = 325,090,081,009.54
  5. Step 5: Solve for x
    x = 325,090,081,009.54/638,888.85
  6. Step 6: Final answer
    x = 508,836.68

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1.5x scale

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.