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Finding the Fourth Proportional to 519,201.90, 778,802.85 and 219,604.77

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Solution

The fourth proportional to 519,201.90, 778,802.85 and 219,604.77 is: 329,407.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,201.90 : 778,802.85 = 219,604.77 : x
  2. Step 2: Convert to fraction form
    519,201.90/778,802.85 = 219,604.77/x
  3. Step 3: Cross multiply
    519,201.90x = 778,802.85 × 219,604.77
  4. Step 4: Simplify right side
    519,201.90x = 171,028,820,749.59
  5. Step 5: Solve for x
    x = 171,028,820,749.59/519,201.90
  6. Step 6: Final answer
    x = 329,407.16

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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.