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Finding the Fourth Proportional to 260,112.20, 389,714.70 and 119,582.60

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Solution

The fourth proportional to 260,112.20, 389,714.70 and 119,582.60 is: 179,165.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,112.20 : 389,714.70 = 119,582.60 : x
  2. Step 2: Convert to fraction form
    260,112.20/389,714.70 = 119,582.60/x
  3. Step 3: Cross multiply
    260,112.20x = 389,714.70 × 119,582.60
  4. Step 4: Simplify right side
    260,112.20x = 46,603,097,084.22
  5. Step 5: Solve for x
    x = 46,603,097,084.22/260,112.20
  6. Step 6: Final answer
    x = 179,165.36

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1.5x scale

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.