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Finding the Fourth Proportional to 505,047.80, 696,961.59 and 275,609.63

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Solution

The fourth proportional to 505,047.80, 696,961.59 and 275,609.63 is: 380,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,047.80 : 696,961.59 = 275,609.63 : x
  2. Step 2: Convert to fraction form
    505,047.80/696,961.59 = 275,609.63/x
  3. Step 3: Cross multiply
    505,047.80x = 696,961.59 × 275,609.63
  4. Step 4: Simplify right side
    505,047.80x = 192,089,325,944.11
  5. Step 5: Solve for x
    x = 192,089,325,944.11/505,047.80
  6. Step 6: Final answer
    x = 380,338.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.