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Finding the Fourth Proportional to 117,137.68, 175,706.51 and 28,391.18

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Solution

The fourth proportional to 117,137.68, 175,706.51 and 28,391.18 is: 42,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,137.68 : 175,706.51 = 28,391.18 : x
  2. Step 2: Convert to fraction form
    117,137.68/175,706.51 = 28,391.18/x
  3. Step 3: Cross multiply
    117,137.68x = 175,706.51 × 28,391.18
  4. Step 4: Simplify right side
    117,137.68x = 4,988,515,010.63
  5. Step 5: Solve for x
    x = 4,988,515,010.63/117,137.68
  6. Step 6: Final answer
    x = 42,586.77

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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.