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Finding the Fourth Proportional to 89,085.70, 133,628.46 and 36,495.28

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Solution

The fourth proportional to 89,085.70, 133,628.46 and 36,495.28 is: 54,742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,085.70 : 133,628.46 = 36,495.28 : x
  2. Step 2: Convert to fraction form
    89,085.70/133,628.46 = 36,495.28/x
  3. Step 3: Cross multiply
    89,085.70x = 133,628.46 × 36,495.28
  4. Step 4: Simplify right side
    89,085.70x = 4,876,808,063.67
  5. Step 5: Solve for x
    x = 4,876,808,063.67/89,085.70
  6. Step 6: Final answer
    x = 54,742.88

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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.