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Finding the Fourth Proportional to 276,813.60, 415,220.67 and 77,134.56

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Solution

The fourth proportional to 276,813.60, 415,220.67 and 77,134.56 is: 115,701.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,813.60 : 415,220.67 = 77,134.56 : x
  2. Step 2: Convert to fraction form
    276,813.60/415,220.67 = 77,134.56/x
  3. Step 3: Cross multiply
    276,813.60x = 415,220.67 × 77,134.56
  4. Step 4: Simplify right side
    276,813.60x = 32,027,863,683.36
  5. Step 5: Solve for x
    x = 32,027,863,683.36/276,813.60
  6. Step 6: Final answer
    x = 115,701.92

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1.5x scale

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.