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Finding the Fourth Proportional to 117,900.65, 176,739.80 and 58,680.34

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Solution

The fourth proportional to 117,900.65, 176,739.80 and 58,680.34 is: 87,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,900.65 : 176,739.80 = 58,680.34 : x
  2. Step 2: Convert to fraction form
    117,900.65/176,739.80 = 58,680.34/x
  3. Step 3: Cross multiply
    117,900.65x = 176,739.80 × 58,680.34
  4. Step 4: Simplify right side
    117,900.65x = 10,371,150,378.43
  5. Step 5: Solve for x
    x = 10,371,150,378.43/117,900.65
  6. Step 6: Final answer
    x = 87,965.17

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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.