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Finding the Fourth Proportional to 341,661.21, 512,540.82 and 105,023.76

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Solution

The fourth proportional to 341,661.21, 512,540.82 and 105,023.76 is: 157,550.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,661.21 : 512,540.82 = 105,023.76 : x
  2. Step 2: Convert to fraction form
    341,661.21/512,540.82 = 105,023.76/x
  3. Step 3: Cross multiply
    341,661.21x = 512,540.82 × 105,023.76
  4. Step 4: Simplify right side
    341,661.21x = 53,828,964,069.88
  5. Step 5: Solve for x
    x = 53,828,964,069.88/341,661.21
  6. Step 6: Final answer
    x = 157,550.70

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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.