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Finding the Fourth Proportional to 318,285.37, 440,390.41 and 277,534.47

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Solution

The fourth proportional to 318,285.37, 440,390.41 and 277,534.47 is: 384,006.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,285.37 : 440,390.41 = 277,534.47 : x
  2. Step 2: Convert to fraction form
    318,285.37/440,390.41 = 277,534.47/x
  3. Step 3: Cross multiply
    318,285.37x = 440,390.41 × 277,534.47
  4. Step 4: Simplify right side
    318,285.37x = 122,223,519,032.43
  5. Step 5: Solve for x
    x = 122,223,519,032.43/318,285.37
  6. Step 6: Final answer
    x = 384,006.09

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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.