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Finding the Fourth Proportional to 71,427.12, 98,567.64 and 39,595.92

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Solution

The fourth proportional to 71,427.12, 98,567.64 and 39,595.92 is: 54,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,427.12 : 98,567.64 = 39,595.92 : x
  2. Step 2: Convert to fraction form
    71,427.12/98,567.64 = 39,595.92/x
  3. Step 3: Cross multiply
    71,427.12x = 98,567.64 × 39,595.92
  4. Step 4: Simplify right side
    71,427.12x = 3,902,876,388.03
  5. Step 5: Solve for x
    x = 3,902,876,388.03/71,427.12
  6. Step 6: Final answer
    x = 54,641.38

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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.