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Finding the Fourth Proportional to 505,059.45, 696,986.12 and 275,618.55

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Solution

The fourth proportional to 505,059.45, 696,986.12 and 275,618.55 is: 380,355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,059.45 : 696,986.12 = 275,618.55 : x
  2. Step 2: Convert to fraction form
    505,059.45/696,986.12 = 275,618.55/x
  3. Step 3: Cross multiply
    505,059.45x = 696,986.12 × 275,618.55
  4. Step 4: Simplify right side
    505,059.45x = 192,102,301,596.37
  5. Step 5: Solve for x
    x = 192,102,301,596.37/505,059.45
  6. Step 6: Final answer
    x = 380,355.82

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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.