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Finding the Fourth Proportional to 400,568.28, 600,852.54 and 120,085.56

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Solution

The fourth proportional to 400,568.28, 600,852.54 and 120,085.56 is: 180,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,568.28 : 600,852.54 = 120,085.56 : x
  2. Step 2: Convert to fraction form
    400,568.28/600,852.54 = 120,085.56/x
  3. Step 3: Cross multiply
    400,568.28x = 600,852.54 × 120,085.56
  4. Step 4: Simplify right side
    400,568.28x = 72,153,713,743.32
  5. Step 5: Solve for x
    x = 72,153,713,743.32/400,568.28
  6. Step 6: Final answer
    x = 180,128.38

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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.