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Finding the Fourth Proportional to 611,034.84, 916,333.56 and 211,568.36

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Solution

The fourth proportional to 611,034.84, 916,333.56 and 211,568.36 is: 317,276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,034.84 : 916,333.56 = 211,568.36 : x
  2. Step 2: Convert to fraction form
    611,034.84/916,333.56 = 211,568.36/x
  3. Step 3: Cross multiply
    611,034.84x = 916,333.56 × 211,568.36
  4. Step 4: Simplify right side
    611,034.84x = 193,867,183,920.49
  5. Step 5: Solve for x
    x = 193,867,183,920.49/611,034.84
  6. Step 6: Final answer
    x = 317,276.81

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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.