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Finding the Fourth Proportional to 256,412.40, 353,647.35 and 239,223.75

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Solution

The fourth proportional to 256,412.40, 353,647.35 and 239,223.75 is: 329,940.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,412.40 : 353,647.35 = 239,223.75 : x
  2. Step 2: Convert to fraction form
    256,412.40/353,647.35 = 239,223.75/x
  3. Step 3: Cross multiply
    256,412.40x = 353,647.35 × 239,223.75
  4. Step 4: Simplify right side
    256,412.40x = 84,600,845,244.56
  5. Step 5: Solve for x
    x = 84,600,845,244.56/256,412.40
  6. Step 6: Final answer
    x = 329,940.54

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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.