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Finding the Fourth Proportional to 14,670.94, 20,245.91 and 7,956.57

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Solution

The fourth proportional to 14,670.94, 20,245.91 and 7,956.57 is: 10,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,670.94 : 20,245.91 = 7,956.57 : x
  2. Step 2: Convert to fraction form
    14,670.94/20,245.91 = 7,956.57/x
  3. Step 3: Cross multiply
    14,670.94x = 20,245.91 × 7,956.57
  4. Step 4: Simplify right side
    14,670.94x = 161,088,000.13
  5. Step 5: Solve for x
    x = 161,088,000.13/14,670.94
  6. Step 6: Final answer
    x = 10,980.07

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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.