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Finding the Fourth Proportional to 519,129.10, 778,693.65 and 366,913.90

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Solution

The fourth proportional to 519,129.10, 778,693.65 and 366,913.90 is: 550,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,129.10 : 778,693.65 = 366,913.90 : x
  2. Step 2: Convert to fraction form
    519,129.10/778,693.65 = 366,913.90/x
  3. Step 3: Cross multiply
    519,129.10x = 778,693.65 × 366,913.90
  4. Step 4: Simplify right side
    519,129.10x = 285,713,524,026.74
  5. Step 5: Solve for x
    x = 285,713,524,026.74/519,129.10
  6. Step 6: Final answer
    x = 550,370.85

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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.