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Finding the Fourth Proportional to 519,233.63, 778,879.60 and 145,285.79

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Solution

The fourth proportional to 519,233.63, 778,879.60 and 145,285.79 is: 217,936.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,233.63 : 778,879.60 = 145,285.79 : x
  2. Step 2: Convert to fraction form
    519,233.63/778,879.60 = 145,285.79/x
  3. Step 3: Cross multiply
    519,233.63x = 778,879.60 × 145,285.79
  4. Step 4: Simplify right side
    519,233.63x = 113,160,133,743.27
  5. Step 5: Solve for x
    x = 113,160,133,743.27/519,233.63
  6. Step 6: Final answer
    x = 217,936.84

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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.