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Finding the Fourth Proportional to 61,530.39, 84,912.29 and 34,673.31

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Solution

The fourth proportional to 61,530.39, 84,912.29 and 34,673.31 is: 47,849.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,530.39 : 84,912.29 = 34,673.31 : x
  2. Step 2: Convert to fraction form
    61,530.39/84,912.29 = 34,673.31/x
  3. Step 3: Cross multiply
    61,530.39x = 84,912.29 × 34,673.31
  4. Step 4: Simplify right side
    61,530.39x = 2,944,189,980.61
  5. Step 5: Solve for x
    x = 2,944,189,980.61/61,530.39
  6. Step 6: Final answer
    x = 47,849.36

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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.