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Finding the Fourth Proportional to 163,531.53, 225,763.07 and 99,012.33

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Solution

The fourth proportional to 163,531.53, 225,763.07 and 99,012.33 is: 136,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,531.53 : 225,763.07 = 99,012.33 : x
  2. Step 2: Convert to fraction form
    163,531.53/225,763.07 = 99,012.33/x
  3. Step 3: Cross multiply
    163,531.53x = 225,763.07 × 99,012.33
  4. Step 4: Simplify right side
    163,531.53x = 22,353,327,093.59
  5. Step 5: Solve for x
    x = 22,353,327,093.59/163,531.53
  6. Step 6: Final answer
    x = 136,691.24

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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.