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Finding the Fourth Proportional to 405,577.20, 608,711.40 and 181,282.80

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Solution

The fourth proportional to 405,577.20, 608,711.40 and 181,282.80 is: 272,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,577.20 : 608,711.40 = 181,282.80 : x
  2. Step 2: Convert to fraction form
    405,577.20/608,711.40 = 181,282.80/x
  3. Step 3: Cross multiply
    405,577.20x = 608,711.40 × 181,282.80
  4. Step 4: Simplify right side
    405,577.20x = 110,348,906,983.92
  5. Step 5: Solve for x
    x = 110,348,906,983.92/405,577.20
  6. Step 6: Final answer
    x = 272,078.67

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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.