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Finding the Fourth Proportional to 235,839.01, 325,454.57 and 128,409.05

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Solution

The fourth proportional to 235,839.01, 325,454.57 and 128,409.05 is: 177,202.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,839.01 : 325,454.57 = 128,409.05 : x
  2. Step 2: Convert to fraction form
    235,839.01/325,454.57 = 128,409.05/x
  3. Step 3: Cross multiply
    235,839.01x = 325,454.57 × 128,409.05
  4. Step 4: Simplify right side
    235,839.01x = 41,791,311,696.60
  5. Step 5: Solve for x
    x = 41,791,311,696.60/235,839.01
  6. Step 6: Final answer
    x = 177,202.71

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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.