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Finding the Fourth Proportional to 515,358.40, 773,024.94 and 199,815.41

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Solution

The fourth proportional to 515,358.40, 773,024.94 and 199,815.41 is: 299,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,358.40 : 773,024.94 = 199,815.41 : x
  2. Step 2: Convert to fraction form
    515,358.40/773,024.94 = 199,815.41/x
  3. Step 3: Cross multiply
    515,358.40x = 773,024.94 × 199,815.41
  4. Step 4: Simplify right side
    515,358.40x = 154,462,295,326.33
  5. Step 5: Solve for x
    x = 154,462,295,326.33/515,358.40
  6. Step 6: Final answer
    x = 299,718.21

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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.