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Finding the Fourth Proportional to 351,697.51, 485,336.17 and 198,732.39

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Solution

The fourth proportional to 351,697.51, 485,336.17 and 198,732.39 is: 274,247.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,697.51 : 485,336.17 = 198,732.39 : x
  2. Step 2: Convert to fraction form
    351,697.51/485,336.17 = 198,732.39/x
  3. Step 3: Cross multiply
    351,697.51x = 485,336.17 × 198,732.39
  4. Step 4: Simplify right side
    351,697.51x = 96,452,015,445.95
  5. Step 5: Solve for x
    x = 96,452,015,445.95/351,697.51
  6. Step 6: Final answer
    x = 274,247.08

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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.