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Finding the Fourth Proportional to 26,475.80, 39,713.70 and 8,007.80

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Solution

The fourth proportional to 26,475.80, 39,713.70 and 8,007.80 is: 12,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,475.80 : 39,713.70 = 8,007.80 : x
  2. Step 2: Convert to fraction form
    26,475.80/39,713.70 = 8,007.80/x
  3. Step 3: Cross multiply
    26,475.80x = 39,713.70 × 8,007.80
  4. Step 4: Simplify right side
    26,475.80x = 318,019,366.86
  5. Step 5: Solve for x
    x = 318,019,366.86/26,475.80
  6. Step 6: Final answer
    x = 12,011.70

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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.