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Finding the Fourth Proportional to 518,453.67, 777,512.40 and 198,588.52

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Solution

The fourth proportional to 518,453.67, 777,512.40 and 198,588.52 is: 297,818.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,453.67 : 777,512.40 = 198,588.52 : x
  2. Step 2: Convert to fraction form
    518,453.67/777,512.40 = 198,588.52/x
  3. Step 3: Cross multiply
    518,453.67x = 777,512.40 × 198,588.52
  4. Step 4: Simplify right side
    518,453.67x = 154,405,038,141.89
  5. Step 5: Solve for x
    x = 154,405,038,141.89/518,453.67
  6. Step 6: Final answer
    x = 297,818.39

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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.