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Finding the Fourth Proportional to 118,039.60, 165,722 and 118,039.60

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Solution

The fourth proportional to 118,039.60, 165,722 and 118,039.60 is: 165,722

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,039.60 : 165,722 = 118,039.60 : x
  2. Step 2: Convert to fraction form
    118,039.60/165,722 = 118,039.60/x
  3. Step 3: Cross multiply
    118,039.60x = 165,722 × 118,039.60
  4. Step 4: Simplify right side
    118,039.60x = 19,561,758,591.20
  5. Step 5: Solve for x
    x = 19,561,758,591.20/118,039.60
  6. Step 6: Final answer
    x = 165,722

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.