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Finding the Fourth Proportional to 618,866.84, 928,416.90 and 440,932.52

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Solution

The fourth proportional to 618,866.84, 928,416.90 and 440,932.52 is: 661,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,866.84 : 928,416.90 = 440,932.52 : x
  2. Step 2: Convert to fraction form
    618,866.84/928,416.90 = 440,932.52/x
  3. Step 3: Cross multiply
    618,866.84x = 928,416.90 × 440,932.52
  4. Step 4: Simplify right side
    618,866.84x = 409,369,203,327.59
  5. Step 5: Solve for x
    x = 409,369,203,327.59/618,866.84
  6. Step 6: Final answer
    x = 661,481.88

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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.