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Finding the Fourth Proportional to 19,994.70, 27,592.80 and 11,042.58

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Solution

The fourth proportional to 19,994.70, 27,592.80 and 11,042.58 is: 15,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.70 : 27,592.80 = 11,042.58 : x
  2. Step 2: Convert to fraction form
    19,994.70/27,592.80 = 11,042.58/x
  3. Step 3: Cross multiply
    19,994.70x = 27,592.80 × 11,042.58
  4. Step 4: Simplify right side
    19,994.70x = 304,695,701.42
  5. Step 5: Solve for x
    x = 304,695,701.42/19,994.70
  6. Step 6: Final answer
    x = 15,238.82

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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.