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Finding the Fourth Proportional to 19,951.64, 27,534.90 and 10,999.99

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Solution

The fourth proportional to 19,951.64, 27,534.90 and 10,999.99 is: 15,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.64 : 27,534.90 = 10,999.99 : x
  2. Step 2: Convert to fraction form
    19,951.64/27,534.90 = 10,999.99/x
  3. Step 3: Cross multiply
    19,951.64x = 27,534.90 × 10,999.99
  4. Step 4: Simplify right side
    19,951.64x = 302,883,624.65
  5. Step 5: Solve for x
    x = 302,883,624.65/19,951.64
  6. Step 6: Final answer
    x = 15,180.89

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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.