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Finding the Fourth Proportional to 518,003.36, 777,059.05 and 198,154.61

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Solution

The fourth proportional to 518,003.36, 777,059.05 and 198,154.61 is: 297,252.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,003.36 : 777,059.05 = 198,154.61 : x
  2. Step 2: Convert to fraction form
    518,003.36/777,059.05 = 198,154.61/x
  3. Step 3: Cross multiply
    518,003.36x = 777,059.05 × 198,154.61
  4. Step 4: Simplify right side
    518,003.36x = 153,977,832,999.72
  5. Step 5: Solve for x
    x = 153,977,832,999.72/518,003.36
  6. Step 6: Final answer
    x = 297,252.58

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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.