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Finding the Fourth Proportional to 405,539.70, 608,655.15 and 181,245.30

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Solution

The fourth proportional to 405,539.70, 608,655.15 and 181,245.30 is: 272,022.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,539.70 : 608,655.15 = 181,245.30 : x
  2. Step 2: Convert to fraction form
    405,539.70/608,655.15 = 181,245.30/x
  3. Step 3: Cross multiply
    405,539.70x = 608,655.15 × 181,245.30
  4. Step 4: Simplify right side
    405,539.70x = 110,315,885,258.30
  5. Step 5: Solve for x
    x = 110,315,885,258.30/405,539.70
  6. Step 6: Final answer
    x = 272,022.41

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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.