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Finding the Fourth Proportional to 98,809.56, 148,108.14 and 42,676.20

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Solution

The fourth proportional to 98,809.56, 148,108.14 and 42,676.20 is: 63,968.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,809.56 : 148,108.14 = 42,676.20 : x
  2. Step 2: Convert to fraction form
    98,809.56/148,108.14 = 42,676.20/x
  3. Step 3: Cross multiply
    98,809.56x = 148,108.14 × 42,676.20
  4. Step 4: Simplify right side
    98,809.56x = 6,320,692,604.27
  5. Step 5: Solve for x
    x = 6,320,692,604.27/98,809.56
  6. Step 6: Final answer
    x = 63,968.43

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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.