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Finding the Fourth Proportional to 276,113.91, 381,035.28 and 156,881.91

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Solution

The fourth proportional to 276,113.91, 381,035.28 and 156,881.91 is: 216,495.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,113.91 : 381,035.28 = 156,881.91 : x
  2. Step 2: Convert to fraction form
    276,113.91/381,035.28 = 156,881.91/x
  3. Step 3: Cross multiply
    276,113.91x = 381,035.28 × 156,881.91
  4. Step 4: Simplify right side
    276,113.91x = 59,777,542,503.78
  5. Step 5: Solve for x
    x = 59,777,542,503.78/276,113.91
  6. Step 6: Final answer
    x = 216,495.95

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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.