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Finding the Fourth Proportional to 132,648.95, 183,054.42 and 72,219.44

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Solution

The fourth proportional to 132,648.95, 183,054.42 and 72,219.44 is: 99,662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,648.95 : 183,054.42 = 72,219.44 : x
  2. Step 2: Convert to fraction form
    132,648.95/183,054.42 = 72,219.44/x
  3. Step 3: Cross multiply
    132,648.95x = 183,054.42 × 72,219.44
  4. Step 4: Simplify right side
    132,648.95x = 13,220,086,786.65
  5. Step 5: Solve for x
    x = 13,220,086,786.65/132,648.95
  6. Step 6: Final answer
    x = 99,662.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.