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Finding the Fourth Proportional to 119,389.58, 164,754.11 and 65,674.56

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Solution

The fourth proportional to 119,389.58, 164,754.11 and 65,674.56 is: 90,628.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,389.58 : 164,754.11 = 65,674.56 : x
  2. Step 2: Convert to fraction form
    119,389.58/164,754.11 = 65,674.56/x
  3. Step 3: Cross multiply
    119,389.58x = 164,754.11 × 65,674.56
  4. Step 4: Simplify right side
    119,389.58x = 10,820,153,354.07
  5. Step 5: Solve for x
    x = 10,820,153,354.07/119,389.58
  6. Step 6: Final answer
    x = 90,628.96

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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.