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Finding the Fourth Proportional to 235,783.22, 325,383.60 and 128,355.14

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Solution

The fourth proportional to 235,783.22, 325,383.60 and 128,355.14 is: 177,131.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,783.22 : 325,383.60 = 128,355.14 : x
  2. Step 2: Convert to fraction form
    235,783.22/325,383.60 = 128,355.14/x
  3. Step 3: Cross multiply
    235,783.22x = 325,383.60 × 128,355.14
  4. Step 4: Simplify right side
    235,783.22x = 41,764,657,531.70
  5. Step 5: Solve for x
    x = 41,764,657,531.70/235,783.22
  6. Step 6: Final answer
    x = 177,131.59

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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.