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Finding the Fourth Proportional to 439,059.78, 605,901.69 and 237,855.78

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Solution

The fourth proportional to 439,059.78, 605,901.69 and 237,855.78 is: 328,240.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,059.78 : 605,901.69 = 237,855.78 : x
  2. Step 2: Convert to fraction form
    439,059.78/605,901.69 = 237,855.78/x
  3. Step 3: Cross multiply
    439,059.78x = 605,901.69 × 237,855.78
  4. Step 4: Simplify right side
    439,059.78x = 144,117,219,078.27
  5. Step 5: Solve for x
    x = 144,117,219,078.27/439,059.78
  6. Step 6: Final answer
    x = 328,240.54

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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.