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Finding the Fourth Proportional to 505,763.40, 758,936.70 and 190,446.60

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Solution

The fourth proportional to 505,763.40, 758,936.70 and 190,446.60 is: 285,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,763.40 : 758,936.70 = 190,446.60 : x
  2. Step 2: Convert to fraction form
    505,763.40/758,936.70 = 190,446.60/x
  3. Step 3: Cross multiply
    505,763.40x = 758,936.70 × 190,446.60
  4. Step 4: Simplify right side
    505,763.40x = 144,536,914,130.22
  5. Step 5: Solve for x
    x = 144,536,914,130.22/505,763.40
  6. Step 6: Final answer
    x = 285,779.70

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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.