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Finding the Fourth Proportional to 395,554.72, 593,322.36 and 115,074.40

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Solution

The fourth proportional to 395,554.72, 593,322.36 and 115,074.40 is: 172,608.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,554.72 : 593,322.36 = 115,074.40 : x
  2. Step 2: Convert to fraction form
    395,554.72/593,322.36 = 115,074.40/x
  3. Step 3: Cross multiply
    395,554.72x = 593,322.36 × 115,074.40
  4. Step 4: Simplify right side
    395,554.72x = 68,276,214,583.58
  5. Step 5: Solve for x
    x = 68,276,214,583.58/395,554.72
  6. Step 6: Final answer
    x = 172,608.77

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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.