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Finding the Fourth Proportional to 235,415.79, 324,880.20 and 127,993.05

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Solution

The fourth proportional to 235,415.79, 324,880.20 and 127,993.05 is: 176,633.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,415.79 : 324,880.20 = 127,993.05 : x
  2. Step 2: Convert to fraction form
    235,415.79/324,880.20 = 127,993.05/x
  3. Step 3: Cross multiply
    235,415.79x = 324,880.20 × 127,993.05
  4. Step 4: Simplify right side
    235,415.79x = 41,582,407,682.61
  5. Step 5: Solve for x
    x = 41,582,407,682.61/235,415.79
  6. Step 6: Final answer
    x = 176,633.89

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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.