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Finding the Fourth Proportional to 383,073.93, 528,561.83 and 221,919.37

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Solution

The fourth proportional to 383,073.93, 528,561.83 and 221,919.37 is: 306,202.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,073.93 : 528,561.83 = 221,919.37 : x
  2. Step 2: Convert to fraction form
    383,073.93/528,561.83 = 221,919.37/x
  3. Step 3: Cross multiply
    383,073.93x = 528,561.83 × 221,919.37
  4. Step 4: Simplify right side
    383,073.93x = 117,298,109,535.15
  5. Step 5: Solve for x
    x = 117,298,109,535.15/383,073.93
  6. Step 6: Final answer
    x = 306,202.27

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1.5x scale

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.