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Finding the Fourth Proportional to 8,275.70, 11,420.46 and 4,738.93

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Solution

The fourth proportional to 8,275.70, 11,420.46 and 4,738.93 is: 6,539.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,275.70 : 11,420.46 = 4,738.93 : x
  2. Step 2: Convert to fraction form
    8,275.70/11,420.46 = 4,738.93/x
  3. Step 3: Cross multiply
    8,275.70x = 11,420.46 × 4,738.93
  4. Step 4: Simplify right side
    8,275.70x = 54,120,731.96
  5. Step 5: Solve for x
    x = 54,120,731.96/8,275.70
  6. Step 6: Final answer
    x = 6,539.71

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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.