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Finding the Fourth Proportional to 716,525.42, 988,784.69 and 394,235.73

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Solution

The fourth proportional to 716,525.42, 988,784.69 and 394,235.73 is: 544,034.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,525.42 : 988,784.69 = 394,235.73 : x
  2. Step 2: Convert to fraction form
    716,525.42/988,784.69 = 394,235.73/x
  3. Step 3: Cross multiply
    716,525.42x = 988,784.69 × 394,235.73
  4. Step 4: Simplify right side
    716,525.42x = 389,814,252,103.80
  5. Step 5: Solve for x
    x = 389,814,252,103.80/716,525.42
  6. Step 6: Final answer
    x = 544,034.09

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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.