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Finding the Fourth Proportional to 151,469.60, 209,043.60 and 91,059.92

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Solution

The fourth proportional to 151,469.60, 209,043.60 and 91,059.92 is: 125,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,469.60 : 209,043.60 = 91,059.92 : x
  2. Step 2: Convert to fraction form
    151,469.60/209,043.60 = 91,059.92/x
  3. Step 3: Cross multiply
    151,469.60x = 209,043.60 × 91,059.92
  4. Step 4: Simplify right side
    151,469.60x = 19,035,493,492.51
  5. Step 5: Solve for x
    x = 19,035,493,492.51/151,469.60
  6. Step 6: Final answer
    x = 125,672.04

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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.