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Finding the Fourth Proportional to 408,400.07, 612,200.16 and 228,573.32

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Solution

The fourth proportional to 408,400.07, 612,200.16 and 228,573.32 is: 342,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,400.07 : 612,200.16 = 228,573.32 : x
  2. Step 2: Convert to fraction form
    408,400.07/612,200.16 = 228,573.32/x
  3. Step 3: Cross multiply
    408,400.07x = 612,200.16 × 228,573.32
  4. Step 4: Simplify right side
    408,400.07x = 139,932,620,014.73
  5. Step 5: Solve for x
    x = 139,932,620,014.73/408,400.07
  6. Step 6: Final answer
    x = 342,636.14

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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.