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Finding the Fourth Proportional to 99,675.10, 149,512.65 and 94,231.90

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Solution

The fourth proportional to 99,675.10, 149,512.65 and 94,231.90 is: 141,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,675.10 : 149,512.65 = 94,231.90 : x
  2. Step 2: Convert to fraction form
    99,675.10/149,512.65 = 94,231.90/x
  3. Step 3: Cross multiply
    99,675.10x = 149,512.65 × 94,231.90
  4. Step 4: Simplify right side
    99,675.10x = 14,088,861,083.54
  5. Step 5: Solve for x
    x = 14,088,861,083.54/99,675.10
  6. Step 6: Final answer
    x = 141,347.85

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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.