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Finding the Fourth Proportional to 318,139.78, 439,035.54 and 174,896.68

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Solution

The fourth proportional to 318,139.78, 439,035.54 and 174,896.68 is: 241,358.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,139.78 : 439,035.54 = 174,896.68 : x
  2. Step 2: Convert to fraction form
    318,139.78/439,035.54 = 174,896.68/x
  3. Step 3: Cross multiply
    318,139.78x = 439,035.54 × 174,896.68
  4. Step 4: Simplify right side
    318,139.78x = 76,785,858,348.01
  5. Step 5: Solve for x
    x = 76,785,858,348.01/318,139.78
  6. Step 6: Final answer
    x = 241,358.87

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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.