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Finding the Fourth Proportional to 613,819.19, 847,113.07 and 372,111.95

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Solution

The fourth proportional to 613,819.19, 847,113.07 and 372,111.95 is: 513,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,819.19 : 847,113.07 = 372,111.95 : x
  2. Step 2: Convert to fraction form
    613,819.19/847,113.07 = 372,111.95/x
  3. Step 3: Cross multiply
    613,819.19x = 847,113.07 × 372,111.95
  4. Step 4: Simplify right side
    613,819.19x = 315,220,892,112.62
  5. Step 5: Solve for x
    x = 315,220,892,112.62/613,819.19
  6. Step 6: Final answer
    x = 513,540.31

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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.