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Finding the Fourth Proportional to 618,930.94, 854,126.86 and 389,639.93

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Solution

The fourth proportional to 618,930.94, 854,126.86 and 389,639.93 is: 537,704.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,930.94 : 854,126.86 = 389,639.93 : x
  2. Step 2: Convert to fraction form
    618,930.94/854,126.86 = 389,639.93/x
  3. Step 3: Cross multiply
    618,930.94x = 854,126.86 × 389,639.93
  4. Step 4: Simplify right side
    618,930.94x = 332,801,929,941.52
  5. Step 5: Solve for x
    x = 332,801,929,941.52/618,930.94
  6. Step 6: Final answer
    x = 537,704.46

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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.