Home / 505,904.20-758,856.30-131,927.20

Finding the Fourth Proportional to 505,904.20, 758,856.30 and 131,927.20

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Solution

The fourth proportional to 505,904.20, 758,856.30 and 131,927.20 is: 197,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,904.20 : 758,856.30 = 131,927.20 : x
  2. Step 2: Convert to fraction form
    505,904.20/758,856.30 = 131,927.20/x
  3. Step 3: Cross multiply
    505,904.20x = 758,856.30 × 131,927.20
  4. Step 4: Simplify right side
    505,904.20x = 100,113,786,861.36
  5. Step 5: Solve for x
    x = 100,113,786,861.36/505,904.20
  6. Step 6: Final answer
    x = 197,890.80

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Double scale
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Similar ratio
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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.