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Finding the Fourth Proportional to 66,354.14, 99,531.21 and 19,603.37

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Solution

The fourth proportional to 66,354.14, 99,531.21 and 19,603.37 is: 29,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,354.14 : 99,531.21 = 19,603.37 : x
  2. Step 2: Convert to fraction form
    66,354.14/99,531.21 = 19,603.37/x
  3. Step 3: Cross multiply
    66,354.14x = 99,531.21 × 19,603.37
  4. Step 4: Simplify right side
    66,354.14x = 1,951,146,638.52
  5. Step 5: Solve for x
    x = 1,951,146,638.52/66,354.14
  6. Step 6: Final answer
    x = 29,405.05

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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.