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Finding the Fourth Proportional to 117,153.35, 161,672.39 and 63,438.37

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Solution

The fourth proportional to 117,153.35, 161,672.39 and 63,438.37 is: 87,545.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,153.35 : 161,672.39 = 63,438.37 : x
  2. Step 2: Convert to fraction form
    117,153.35/161,672.39 = 63,438.37/x
  3. Step 3: Cross multiply
    117,153.35x = 161,672.39 × 63,438.37
  4. Step 4: Simplify right side
    117,153.35x = 10,256,232,895.60
  5. Step 5: Solve for x
    x = 10,256,232,895.60/117,153.35
  6. Step 6: Final answer
    x = 87,545.37

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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.