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Finding the Fourth Proportional to 61,806.78, 92,705.40 and 19,689.26

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Solution

The fourth proportional to 61,806.78, 92,705.40 and 19,689.26 is: 29,532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,806.78 : 92,705.40 = 19,689.26 : x
  2. Step 2: Convert to fraction form
    61,806.78/92,705.40 = 19,689.26/x
  3. Step 3: Cross multiply
    61,806.78x = 92,705.40 × 19,689.26
  4. Step 4: Simplify right side
    61,806.78x = 1,825,300,260.48
  5. Step 5: Solve for x
    x = 1,825,300,260.48/61,806.78
  6. Step 6: Final answer
    x = 29,532.36

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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.