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Finding the Fourth Proportional to 168,758.40, 253,137.60 and 122,102.40

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Solution

The fourth proportional to 168,758.40, 253,137.60 and 122,102.40 is: 183,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,758.40 : 253,137.60 = 122,102.40 : x
  2. Step 2: Convert to fraction form
    168,758.40/253,137.60 = 122,102.40/x
  3. Step 3: Cross multiply
    168,758.40x = 253,137.60 × 122,102.40
  4. Step 4: Simplify right side
    168,758.40x = 30,908,708,490.24
  5. Step 5: Solve for x
    x = 30,908,708,490.24/168,758.40
  6. Step 6: Final answer
    x = 183,153.60

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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.