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Finding the Fourth Proportional to 395,720.52, 593,636.22 and 129,501.96

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Solution

The fourth proportional to 395,720.52, 593,636.22 and 129,501.96 is: 194,271.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,720.52 : 593,636.22 = 129,501.96 : x
  2. Step 2: Convert to fraction form
    395,720.52/593,636.22 = 129,501.96/x
  3. Step 3: Cross multiply
    395,720.52x = 593,636.22 × 129,501.96
  4. Step 4: Simplify right side
    395,720.52x = 76,877,054,016.99
  5. Step 5: Solve for x
    x = 76,877,054,016.99/395,720.52
  6. Step 6: Final answer
    x = 194,271.08

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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.