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Finding the Fourth Proportional to 99,326.87, 148,986.99 and 43,167.03

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Solution

The fourth proportional to 99,326.87, 148,986.99 and 43,167.03 is: 64,749.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,326.87 : 148,986.99 = 43,167.03 : x
  2. Step 2: Convert to fraction form
    99,326.87/148,986.99 = 43,167.03/x
  3. Step 3: Cross multiply
    99,326.87x = 148,986.99 × 43,167.03
  4. Step 4: Simplify right side
    99,326.87x = 6,431,325,866.94
  5. Step 5: Solve for x
    x = 6,431,325,866.94/99,326.87
  6. Step 6: Final answer
    x = 64,749.11

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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.