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Finding the Fourth Proportional to 19,999.70, 27,599.48 and 11,047.16

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Solution

The fourth proportional to 19,999.70, 27,599.48 and 11,047.16 is: 15,245.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.70 : 27,599.48 = 11,047.16 : x
  2. Step 2: Convert to fraction form
    19,999.70/27,599.48 = 11,047.16/x
  3. Step 3: Cross multiply
    19,999.70x = 27,599.48 × 11,047.16
  4. Step 4: Simplify right side
    19,999.70x = 304,895,678.24
  5. Step 5: Solve for x
    x = 304,895,678.24/19,999.70
  6. Step 6: Final answer
    x = 15,245.02

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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.