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Finding the Fourth Proportional to 99,467.90, 149,203.43 and 55,374.90

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Solution

The fourth proportional to 99,467.90, 149,203.43 and 55,374.90 is: 83,063.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,467.90 : 149,203.43 = 55,374.90 : x
  2. Step 2: Convert to fraction form
    99,467.90/149,203.43 = 55,374.90/x
  3. Step 3: Cross multiply
    99,467.90x = 149,203.43 × 55,374.90
  4. Step 4: Simplify right side
    99,467.90x = 8,262,125,015.91
  5. Step 5: Solve for x
    x = 8,262,125,015.91/99,467.90
  6. Step 6: Final answer
    x = 83,063.23

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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.