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Finding the Fourth Proportional to 7,659.95, 10,572.21 and 4,974.53

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Solution

The fourth proportional to 7,659.95, 10,572.21 and 4,974.53 is: 6,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.95 : 10,572.21 = 4,974.53 : x
  2. Step 2: Convert to fraction form
    7,659.95/10,572.21 = 4,974.53/x
  3. Step 3: Cross multiply
    7,659.95x = 10,572.21 × 4,974.53
  4. Step 4: Simplify right side
    7,659.95x = 52,591,722.95
  5. Step 5: Solve for x
    x = 52,591,722.95/7,659.95
  6. Step 6: Final answer
    x = 6,865.81

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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.