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Finding the Fourth Proportional to 169,967.20, 254,942.70 and 57,636.40

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Solution

The fourth proportional to 169,967.20, 254,942.70 and 57,636.40 is: 86,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,967.20 : 254,942.70 = 57,636.40 : x
  2. Step 2: Convert to fraction form
    169,967.20/254,942.70 = 57,636.40/x
  3. Step 3: Cross multiply
    169,967.20x = 254,942.70 × 57,636.40
  4. Step 4: Simplify right side
    169,967.20x = 14,693,979,434.28
  5. Step 5: Solve for x
    x = 14,693,979,434.28/169,967.20
  6. Step 6: Final answer
    x = 86,451.85

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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.