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Finding the Fourth Proportional to 50,885.76, 70,211.20 and 49,207.68

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Solution

The fourth proportional to 50,885.76, 70,211.20 and 49,207.68 is: 67,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,885.76 : 70,211.20 = 49,207.68 : x
  2. Step 2: Convert to fraction form
    50,885.76/70,211.20 = 49,207.68/x
  3. Step 3: Cross multiply
    50,885.76x = 70,211.20 × 49,207.68
  4. Step 4: Simplify right side
    50,885.76x = 3,454,930,262.02
  5. Step 5: Solve for x
    x = 3,454,930,262.02/50,885.76
  6. Step 6: Final answer
    x = 67,895.82

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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.