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Finding the Fourth Proportional to 4,975.92, 7,446.56 and 4,087.76

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Solution

The fourth proportional to 4,975.92, 7,446.56 and 4,087.76 is: 6,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,975.92 : 7,446.56 = 4,087.76 : x
  2. Step 2: Convert to fraction form
    4,975.92/7,446.56 = 4,087.76/x
  3. Step 3: Cross multiply
    4,975.92x = 7,446.56 × 4,087.76
  4. Step 4: Simplify right side
    4,975.92x = 30,439,692.43
  5. Step 5: Solve for x
    x = 30,439,692.43/4,975.92
  6. Step 6: Final answer
    x = 6,117.40

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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.