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Finding the Fourth Proportional to 395,572.56, 593,491.32 and 129,345.36

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Solution

The fourth proportional to 395,572.56, 593,491.32 and 129,345.36 is: 194,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,572.56 : 593,491.32 = 129,345.36 : x
  2. Step 2: Convert to fraction form
    395,572.56/593,491.32 = 129,345.36/x
  3. Step 3: Cross multiply
    395,572.56x = 593,491.32 × 129,345.36
  4. Step 4: Simplify right side
    395,572.56x = 76,765,348,442.28
  5. Step 5: Solve for x
    x = 76,765,348,442.28/395,572.56
  6. Step 6: Final answer
    x = 194,061.36

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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.