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Finding the Fourth Proportional to 199,573.84, 299,408.60 and 66,455.30

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Solution

The fourth proportional to 199,573.84, 299,408.60 and 66,455.30 is: 99,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,573.84 : 299,408.60 = 66,455.30 : x
  2. Step 2: Convert to fraction form
    199,573.84/299,408.60 = 66,455.30/x
  3. Step 3: Cross multiply
    199,573.84x = 299,408.60 × 66,455.30
  4. Step 4: Simplify right side
    199,573.84x = 19,897,288,335.58
  5. Step 5: Solve for x
    x = 19,897,288,335.58/199,573.84
  6. Step 6: Final answer
    x = 99,698.88

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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.