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Finding the Fourth Proportional to 439,345.85, 606,123.92 and 275,906.21

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Solution

The fourth proportional to 439,345.85, 606,123.92 and 275,906.21 is: 380,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,345.85 : 606,123.92 = 275,906.21 : x
  2. Step 2: Convert to fraction form
    439,345.85/606,123.92 = 275,906.21/x
  3. Step 3: Cross multiply
    439,345.85x = 606,123.92 × 275,906.21
  4. Step 4: Simplify right side
    439,345.85x = 167,233,355,762.62
  5. Step 5: Solve for x
    x = 167,233,355,762.62/439,345.85
  6. Step 6: Final answer
    x = 380,641.71

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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.