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Finding the Fourth Proportional to 371,609.88, 557,442.62 and 105,391.83

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Solution

The fourth proportional to 371,609.88, 557,442.62 and 105,391.83 is: 158,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,609.88 : 557,442.62 = 105,391.83 : x
  2. Step 2: Convert to fraction form
    371,609.88/557,442.62 = 105,391.83/x
  3. Step 3: Cross multiply
    371,609.88x = 557,442.62 × 105,391.83
  4. Step 4: Simplify right side
    371,609.88x = 58,749,897,841.79
  5. Step 5: Solve for x
    x = 58,749,897,841.79/371,609.88
  6. Step 6: Final answer
    x = 158,095.63

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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.