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Finding the Fourth Proportional to 519,993.60, 779,990.40 and 146,016.60

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Solution

The fourth proportional to 519,993.60, 779,990.40 and 146,016.60 is: 219,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,993.60 : 779,990.40 = 146,016.60 : x
  2. Step 2: Convert to fraction form
    519,993.60/779,990.40 = 146,016.60/x
  3. Step 3: Cross multiply
    519,993.60x = 779,990.40 × 146,016.60
  4. Step 4: Simplify right side
    519,993.60x = 113,891,546,240.64
  5. Step 5: Solve for x
    x = 113,891,546,240.64/519,993.60
  6. Step 6: Final answer
    x = 219,024.90

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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.