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Finding the Fourth Proportional to 400,879.62, 553,194.20 and 219,592.34

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Solution

The fourth proportional to 400,879.62, 553,194.20 and 219,592.34 is: 303,026.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,879.62 : 553,194.20 = 219,592.34 : x
  2. Step 2: Convert to fraction form
    400,879.62/553,194.20 = 219,592.34/x
  3. Step 3: Cross multiply
    400,879.62x = 553,194.20 × 219,592.34
  4. Step 4: Simplify right side
    400,879.62x = 121,477,208,852.43
  5. Step 5: Solve for x
    x = 121,477,208,852.43/400,879.62
  6. Step 6: Final answer
    x = 303,026.65

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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.