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Finding the Fourth Proportional to 117,431.77, 176,153.81 and 89,395.78

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Solution

The fourth proportional to 117,431.77, 176,153.81 and 89,395.78 is: 134,098.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,431.77 : 176,153.81 = 89,395.78 : x
  2. Step 2: Convert to fraction form
    117,431.77/176,153.81 = 89,395.78/x
  3. Step 3: Cross multiply
    117,431.77x = 176,153.81 × 89,395.78
  4. Step 4: Simplify right side
    117,431.77x = 15,747,407,244.92
  5. Step 5: Solve for x
    x = 15,747,407,244.92/117,431.77
  6. Step 6: Final answer
    x = 134,098.36

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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.