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Finding the Fourth Proportional to 256,603.41, 354,106.41 and 141,879.03

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Solution

The fourth proportional to 256,603.41, 354,106.41 and 141,879.03 is: 195,789.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,603.41 : 354,106.41 = 141,879.03 : x
  2. Step 2: Convert to fraction form
    256,603.41/354,106.41 = 141,879.03/x
  3. Step 3: Cross multiply
    256,603.41x = 354,106.41 × 141,879.03
  4. Step 4: Simplify right side
    256,603.41x = 50,240,273,967.58
  5. Step 5: Solve for x
    x = 50,240,273,967.58/256,603.41
  6. Step 6: Final answer
    x = 195,789.58

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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.