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Finding the Fourth Proportional to 66,410.77, 99,586.84 and 19,015.11

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Solution

The fourth proportional to 66,410.77, 99,586.84 and 19,015.11 is: 28,514.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.77 : 99,586.84 = 19,015.11 : x
  2. Step 2: Convert to fraction form
    66,410.77/99,586.84 = 19,015.11/x
  3. Step 3: Cross multiply
    66,410.77x = 99,586.84 × 19,015.11
  4. Step 4: Simplify right side
    66,410.77x = 1,893,654,717.15
  5. Step 5: Solve for x
    x = 1,893,654,717.15/66,410.77
  6. Step 6: Final answer
    x = 28,514.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.