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Finding the Fourth Proportional to 519,326.40, 778,519.38 and 203,698.56

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Solution

The fourth proportional to 519,326.40, 778,519.38 and 203,698.56 is: 305,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,326.40 : 778,519.38 = 203,698.56 : x
  2. Step 2: Convert to fraction form
    519,326.40/778,519.38 = 203,698.56/x
  3. Step 3: Cross multiply
    519,326.40x = 778,519.38 × 203,698.56
  4. Step 4: Simplify right side
    519,326.40x = 158,583,276,638.09
  5. Step 5: Solve for x
    x = 158,583,276,638.09/519,326.40
  6. Step 6: Final answer
    x = 305,363.40

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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.