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Finding the Fourth Proportional to 19,630.20, 27,090.38 and 11,248.32

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Solution

The fourth proportional to 19,630.20, 27,090.38 and 11,248.32 is: 15,523.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,630.20 : 27,090.38 = 11,248.32 : x
  2. Step 2: Convert to fraction form
    19,630.20/27,090.38 = 11,248.32/x
  3. Step 3: Cross multiply
    19,630.20x = 27,090.38 × 11,248.32
  4. Step 4: Simplify right side
    19,630.20x = 304,721,263.16
  5. Step 5: Solve for x
    x = 304,721,263.16/19,630.20
  6. Step 6: Final answer
    x = 15,523.08

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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.