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Finding the Fourth Proportional to 118,160.64, 163,005.30 and 79,933.50

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Solution

The fourth proportional to 118,160.64, 163,005.30 and 79,933.50 is: 110,270.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,160.64 : 163,005.30 = 79,933.50 : x
  2. Step 2: Convert to fraction form
    118,160.64/163,005.30 = 79,933.50/x
  3. Step 3: Cross multiply
    118,160.64x = 163,005.30 × 79,933.50
  4. Step 4: Simplify right side
    118,160.64x = 13,029,584,147.55
  5. Step 5: Solve for x
    x = 13,029,584,147.55/118,160.64
  6. Step 6: Final answer
    x = 110,270.09

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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.