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Finding the Fourth Proportional to 198,300.35, 273,697.65 and 121,859.54

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Solution

The fourth proportional to 198,300.35, 273,697.65 and 121,859.54 is: 168,192.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,300.35 : 273,697.65 = 121,859.54 : x
  2. Step 2: Convert to fraction form
    198,300.35/273,697.65 = 121,859.54/x
  3. Step 3: Cross multiply
    198,300.35x = 273,697.65 × 121,859.54
  4. Step 4: Simplify right side
    198,300.35x = 33,352,669,385.96
  5. Step 5: Solve for x
    x = 33,352,669,385.96/198,300.35
  6. Step 6: Final answer
    x = 168,192.69

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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.