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Finding the Fourth Proportional to 344,554.20, 515,810.70 and 256,199.40

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Solution

The fourth proportional to 344,554.20, 515,810.70 and 256,199.40 is: 383,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,554.20 : 515,810.70 = 256,199.40 : x
  2. Step 2: Convert to fraction form
    344,554.20/515,810.70 = 256,199.40/x
  3. Step 3: Cross multiply
    344,554.20x = 515,810.70 × 256,199.40
  4. Step 4: Simplify right side
    344,554.20x = 132,150,391,853.58
  5. Step 5: Solve for x
    x = 132,150,391,853.58/344,554.20
  6. Step 6: Final answer
    x = 383,540.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.