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Finding the Fourth Proportional to 638,906.10, 957,545.10 and 339,530.10

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Solution

The fourth proportional to 638,906.10, 957,545.10 and 339,530.10 is: 508,862.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,906.10 : 957,545.10 = 339,530.10 : x
  2. Step 2: Convert to fraction form
    638,906.10/957,545.10 = 339,530.10/x
  3. Step 3: Cross multiply
    638,906.10x = 957,545.10 × 339,530.10
  4. Step 4: Simplify right side
    638,906.10x = 325,115,383,557.51
  5. Step 5: Solve for x
    x = 325,115,383,557.51/638,906.10
  6. Step 6: Final answer
    x = 508,862.54

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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.