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Finding the Fourth Proportional to 112,089.88, 167,638.74 and 99,696.52

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Solution

The fourth proportional to 112,089.88, 167,638.74 and 99,696.52 is: 149,103.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,089.88 : 167,638.74 = 99,696.52 : x
  2. Step 2: Convert to fraction form
    112,089.88/167,638.74 = 99,696.52/x
  3. Step 3: Cross multiply
    112,089.88x = 167,638.74 × 99,696.52
  4. Step 4: Simplify right side
    112,089.88x = 16,712,998,995.18
  5. Step 5: Solve for x
    x = 16,712,998,995.18/112,089.88
  6. Step 6: Final answer
    x = 149,103.55

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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.