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Finding the Fourth Proportional to 66,591.69, 99,875.53 and 19,195.14

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Solution

The fourth proportional to 66,591.69, 99,875.53 and 19,195.14 is: 28,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,591.69 : 99,875.53 = 19,195.14 : x
  2. Step 2: Convert to fraction form
    66,591.69/99,875.53 = 19,195.14/x
  3. Step 3: Cross multiply
    66,591.69x = 99,875.53 × 19,195.14
  4. Step 4: Simplify right side
    66,591.69x = 1,917,125,179.45
  5. Step 5: Solve for x
    x = 1,917,125,179.45/66,591.69
  6. Step 6: Final answer
    x = 28,789.26

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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.