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Finding the Fourth Proportional to 519,654.36, 717,109.11 and 290,205.30

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Solution

The fourth proportional to 519,654.36, 717,109.11 and 290,205.30 is: 400,475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,654.36 : 717,109.11 = 290,205.30 : x
  2. Step 2: Convert to fraction form
    519,654.36/717,109.11 = 290,205.30/x
  3. Step 3: Cross multiply
    519,654.36x = 717,109.11 × 290,205.30
  4. Step 4: Simplify right side
    519,654.36x = 208,108,864,400.28
  5. Step 5: Solve for x
    x = 208,108,864,400.28/519,654.36
  6. Step 6: Final answer
    x = 400,475.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.