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Finding the Fourth Proportional to 235,971.85, 325,640.62 and 128,541.62

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Solution

The fourth proportional to 235,971.85, 325,640.62 and 128,541.62 is: 177,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,971.85 : 325,640.62 = 128,541.62 : x
  2. Step 2: Convert to fraction form
    235,971.85/325,640.62 = 128,541.62/x
  3. Step 3: Cross multiply
    235,971.85x = 325,640.62 × 128,541.62
  4. Step 4: Simplify right side
    235,971.85x = 41,858,372,832.60
  5. Step 5: Solve for x
    x = 41,858,372,832.60/235,971.85
  6. Step 6: Final answer
    x = 177,387.15

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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.