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Finding the Fourth Proportional to 500,205.82, 690,300.88 and 273,856.06

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Solution

The fourth proportional to 500,205.82, 690,300.88 and 273,856.06 is: 377,930.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,205.82 : 690,300.88 = 273,856.06 : x
  2. Step 2: Convert to fraction form
    500,205.82/690,300.88 = 273,856.06/x
  3. Step 3: Cross multiply
    500,205.82x = 690,300.88 × 273,856.06
  4. Step 4: Simplify right side
    500,205.82x = 189,043,079,211.33
  5. Step 5: Solve for x
    x = 189,043,079,211.33/500,205.82
  6. Step 6: Final answer
    x = 377,930.59

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1.5x scale

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.