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Finding the Fourth Proportional to 452,056.80, 678,085.20 and 119,632.80

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Solution

The fourth proportional to 452,056.80, 678,085.20 and 119,632.80 is: 179,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,056.80 : 678,085.20 = 119,632.80 : x
  2. Step 2: Convert to fraction form
    452,056.80/678,085.20 = 119,632.80/x
  3. Step 3: Cross multiply
    452,056.80x = 678,085.20 × 119,632.80
  4. Step 4: Simplify right side
    452,056.80x = 81,121,231,114.56
  5. Step 5: Solve for x
    x = 81,121,231,114.56/452,056.80
  6. Step 6: Final answer
    x = 179,449.20

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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.