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Finding the Fourth Proportional to 276,712.57, 415,027.53 and 77,012.14

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Solution

The fourth proportional to 276,712.57, 415,027.53 and 77,012.14 is: 115,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,712.57 : 415,027.53 = 77,012.14 : x
  2. Step 2: Convert to fraction form
    276,712.57/415,027.53 = 77,012.14/x
  3. Step 3: Cross multiply
    276,712.57x = 415,027.53 × 77,012.14
  4. Step 4: Simplify right side
    276,712.57x = 31,962,158,244.21
  5. Step 5: Solve for x
    x = 31,962,158,244.21/276,712.57
  6. Step 6: Final answer
    x = 115,506.71

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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.