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Finding the Fourth Proportional to 159,573.60, 239,302.80 and 80,661.60

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Solution

The fourth proportional to 159,573.60, 239,302.80 and 80,661.60 is: 120,963.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,573.60 : 239,302.80 = 80,661.60 : x
  2. Step 2: Convert to fraction form
    159,573.60/239,302.80 = 80,661.60/x
  3. Step 3: Cross multiply
    159,573.60x = 239,302.80 × 80,661.60
  4. Step 4: Simplify right side
    159,573.60x = 19,302,546,732.48
  5. Step 5: Solve for x
    x = 19,302,546,732.48/159,573.60
  6. Step 6: Final answer
    x = 120,963.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.