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Finding the Fourth Proportional to 160,537.60, 240,979.20 and 90,553.60

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Solution

The fourth proportional to 160,537.60, 240,979.20 and 90,553.60 is: 135,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,537.60 : 240,979.20 = 90,553.60 : x
  2. Step 2: Convert to fraction form
    160,537.60/240,979.20 = 90,553.60/x
  3. Step 3: Cross multiply
    160,537.60x = 240,979.20 × 90,553.60
  4. Step 4: Simplify right side
    160,537.60x = 21,821,534,085.12
  5. Step 5: Solve for x
    x = 21,821,534,085.12/160,537.60
  6. Step 6: Final answer
    x = 135,927.87

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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.