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Finding the Fourth Proportional to 405,124.80, 607,687.20 and 180,592.80

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Solution

The fourth proportional to 405,124.80, 607,687.20 and 180,592.80 is: 270,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,124.80 : 607,687.20 = 180,592.80 : x
  2. Step 2: Convert to fraction form
    405,124.80/607,687.20 = 180,592.80/x
  3. Step 3: Cross multiply
    405,124.80x = 607,687.20 × 180,592.80
  4. Step 4: Simplify right side
    405,124.80x = 109,743,932,972.16
  5. Step 5: Solve for x
    x = 109,743,932,972.16/405,124.80
  6. Step 6: Final answer
    x = 270,889.20

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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.