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Finding the Fourth Proportional to 99,483.96, 149,231.79 and 28,401.14

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Solution

The fourth proportional to 99,483.96, 149,231.79 and 28,401.14 is: 42,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,483.96 : 149,231.79 = 28,401.14 : x
  2. Step 2: Convert to fraction form
    99,483.96/149,231.79 = 28,401.14/x
  3. Step 3: Cross multiply
    99,483.96x = 149,231.79 × 28,401.14
  4. Step 4: Simplify right side
    99,483.96x = 4,238,352,493.89
  5. Step 5: Solve for x
    x = 4,238,352,493.89/99,483.96
  6. Step 6: Final answer
    x = 42,603.37

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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.