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Finding the Fourth Proportional to 114,997.80, 158,696.70 and 64,696.80

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Solution

The fourth proportional to 114,997.80, 158,696.70 and 64,696.80 is: 89,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,997.80 : 158,696.70 = 64,696.80 : x
  2. Step 2: Convert to fraction form
    114,997.80/158,696.70 = 64,696.80/x
  3. Step 3: Cross multiply
    114,997.80x = 158,696.70 × 64,696.80
  4. Step 4: Simplify right side
    114,997.80x = 10,267,168,660.56
  5. Step 5: Solve for x
    x = 10,267,168,660.56/114,997.80
  6. Step 6: Final answer
    x = 89,281.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.