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Finding the Fourth Proportional to 519,115.86, 778,777.56 and 219,595.14

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Solution

The fourth proportional to 519,115.86, 778,777.56 and 219,595.14 is: 329,436.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,115.86 : 778,777.56 = 219,595.14 : x
  2. Step 2: Convert to fraction form
    519,115.86/778,777.56 = 219,595.14/x
  3. Step 3: Cross multiply
    519,115.86x = 778,777.56 × 219,595.14
  4. Step 4: Simplify right side
    519,115.86x = 171,015,767,317.06
  5. Step 5: Solve for x
    x = 171,015,767,317.06/519,115.86
  6. Step 6: Final answer
    x = 329,436.61

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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.