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Finding the Fourth Proportional to 117,165.08, 161,686.97 and 63,448.85

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Solution

The fourth proportional to 117,165.08, 161,686.97 and 63,448.85 is: 87,558.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,165.08 : 161,686.97 = 63,448.85 : x
  2. Step 2: Convert to fraction form
    117,165.08/161,686.97 = 63,448.85/x
  3. Step 3: Cross multiply
    117,165.08x = 161,686.97 × 63,448.85
  4. Step 4: Simplify right side
    117,165.08x = 10,258,852,631.39
  5. Step 5: Solve for x
    x = 10,258,852,631.39/117,165.08
  6. Step 6: Final answer
    x = 87,558.96

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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.