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Finding the Fourth Proportional to 425,418.45, 587,081.34 and 234,438.69

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Solution

The fourth proportional to 425,418.45, 587,081.34 and 234,438.69 is: 323,527.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,418.45 : 587,081.34 = 234,438.69 : x
  2. Step 2: Convert to fraction form
    425,418.45/587,081.34 = 234,438.69/x
  3. Step 3: Cross multiply
    425,418.45x = 587,081.34 × 234,438.69
  4. Step 4: Simplify right side
    425,418.45x = 137,634,580,273.05
  5. Step 5: Solve for x
    x = 137,634,580,273.05/425,418.45
  6. Step 6: Final answer
    x = 323,527.53

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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.