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Finding the Fourth Proportional to 26,981.61, 40,470.96 and 8,261.67

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Solution

The fourth proportional to 26,981.61, 40,470.96 and 8,261.67 is: 12,392.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,981.61 : 40,470.96 = 8,261.67 : x
  2. Step 2: Convert to fraction form
    26,981.61/40,470.96 = 8,261.67/x
  3. Step 3: Cross multiply
    26,981.61x = 40,470.96 × 8,261.67
  4. Step 4: Simplify right side
    26,981.61x = 334,357,716.10
  5. Step 5: Solve for x
    x = 334,357,716.10/26,981.61
  6. Step 6: Final answer
    x = 12,392.06

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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.