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Finding the Fourth Proportional to 430,302.72, 593,745.60 and 239,290.56

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Solution

The fourth proportional to 430,302.72, 593,745.60 and 239,290.56 is: 330,180.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,302.72 : 593,745.60 = 239,290.56 : x
  2. Step 2: Convert to fraction form
    430,302.72/593,745.60 = 239,290.56/x
  3. Step 3: Cross multiply
    430,302.72x = 593,745.60 × 239,290.56
  4. Step 4: Simplify right side
    430,302.72x = 142,077,717,121.54
  5. Step 5: Solve for x
    x = 142,077,717,121.54/430,302.72
  6. Step 6: Final answer
    x = 330,180.85

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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.