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Finding the Fourth Proportional to 136,099.47, 187,823.52 and 75,676.32

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Solution

The fourth proportional to 136,099.47, 187,823.52 and 75,676.32 is: 104,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,099.47 : 187,823.52 = 75,676.32 : x
  2. Step 2: Convert to fraction form
    136,099.47/187,823.52 = 75,676.32/x
  3. Step 3: Cross multiply
    136,099.47x = 187,823.52 × 75,676.32
  4. Step 4: Simplify right side
    136,099.47x = 14,213,792,803.05
  5. Step 5: Solve for x
    x = 14,213,792,803.05/136,099.47
  6. Step 6: Final answer
    x = 104,436.80

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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.