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Finding the Fourth Proportional to 256,189.80, 383,409.90 and 235,194.60

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Solution

The fourth proportional to 256,189.80, 383,409.90 and 235,194.60 is: 351,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,189.80 : 383,409.90 = 235,194.60 : x
  2. Step 2: Convert to fraction form
    256,189.80/383,409.90 = 235,194.60/x
  3. Step 3: Cross multiply
    256,189.80x = 383,409.90 × 235,194.60
  4. Step 4: Simplify right side
    256,189.80x = 90,175,938,066.54
  5. Step 5: Solve for x
    x = 90,175,938,066.54/256,189.80
  6. Step 6: Final answer
    x = 351,988.79

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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.