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Finding the Fourth Proportional to 99,316.88, 148,891.50 and 43,114.58

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Solution

The fourth proportional to 99,316.88, 148,891.50 and 43,114.58 is: 64,635.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,316.88 : 148,891.50 = 43,114.58 : x
  2. Step 2: Convert to fraction form
    99,316.88/148,891.50 = 43,114.58/x
  3. Step 3: Cross multiply
    99,316.88x = 148,891.50 × 43,114.58
  4. Step 4: Simplify right side
    99,316.88x = 6,419,394,488.07
  5. Step 5: Solve for x
    x = 6,419,394,488.07/99,316.88
  6. Step 6: Final answer
    x = 64,635.48

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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.