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Finding the Fourth Proportional to 618,773.76, 928,276.80 and 197,936.64

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Solution

The fourth proportional to 618,773.76, 928,276.80 and 197,936.64 is: 296,942.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,773.76 : 928,276.80 = 197,936.64 : x
  2. Step 2: Convert to fraction form
    618,773.76/928,276.80 = 197,936.64/x
  3. Step 3: Cross multiply
    618,773.76x = 928,276.80 × 197,936.64
  4. Step 4: Simplify right side
    618,773.76x = 183,739,990,781.95
  5. Step 5: Solve for x
    x = 183,739,990,781.95/618,773.76
  6. Step 6: Final answer
    x = 296,942.12

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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.