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Finding the Fourth Proportional to 235,515.44, 353,986.89 and 155,825.21

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Solution

The fourth proportional to 235,515.44, 353,986.89 and 155,825.21 is: 234,210.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,515.44 : 353,986.89 = 155,825.21 : x
  2. Step 2: Convert to fraction form
    235,515.44/353,986.89 = 155,825.21/x
  3. Step 3: Cross multiply
    235,515.44x = 353,986.89 × 155,825.21
  4. Step 4: Simplify right side
    235,515.44x = 55,160,081,471.50
  5. Step 5: Solve for x
    x = 55,160,081,471.50/235,515.44
  6. Step 6: Final answer
    x = 234,210.04

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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.