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Finding the Fourth Proportional to 395,586.72, 593,370.36 and 115,106.40

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Solution

The fourth proportional to 395,586.72, 593,370.36 and 115,106.40 is: 172,656.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,586.72 : 593,370.36 = 115,106.40 : x
  2. Step 2: Convert to fraction form
    395,586.72/593,370.36 = 115,106.40/x
  3. Step 3: Cross multiply
    395,586.72x = 593,370.36 × 115,106.40
  4. Step 4: Simplify right side
    395,586.72x = 68,300,726,006.30
  5. Step 5: Solve for x
    x = 68,300,726,006.30/395,586.72
  6. Step 6: Final answer
    x = 172,656.77

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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.