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Finding the Fourth Proportional to 136,792.80, 204,722.40 and 114,631.20

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Solution

The fourth proportional to 136,792.80, 204,722.40 and 114,631.20 is: 171,555.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,792.80 : 204,722.40 = 114,631.20 : x
  2. Step 2: Convert to fraction form
    136,792.80/204,722.40 = 114,631.20/x
  3. Step 3: Cross multiply
    136,792.80x = 204,722.40 × 114,631.20
  4. Step 4: Simplify right side
    136,792.80x = 23,467,574,378.88
  5. Step 5: Solve for x
    x = 23,467,574,378.88/136,792.80
  6. Step 6: Final answer
    x = 171,555.63

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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.