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Finding the Fourth Proportional to 133,062.30, 199,324.65 and 82,988.70

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Solution

The fourth proportional to 133,062.30, 199,324.65 and 82,988.70 is: 124,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,062.30 : 199,324.65 = 82,988.70 : x
  2. Step 2: Convert to fraction form
    133,062.30/199,324.65 = 82,988.70/x
  3. Step 3: Cross multiply
    133,062.30x = 199,324.65 × 82,988.70
  4. Step 4: Simplify right side
    133,062.30x = 16,541,693,581.46
  5. Step 5: Solve for x
    x = 16,541,693,581.46/133,062.30
  6. Step 6: Final answer
    x = 124,315.40

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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.