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Finding the Fourth Proportional to 61,643.80, 92,411.70 and 41,858.20

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Solution

The fourth proportional to 61,643.80, 92,411.70 and 41,858.20 is: 62,750.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,643.80 : 92,411.70 = 41,858.20 : x
  2. Step 2: Convert to fraction form
    61,643.80/92,411.70 = 41,858.20/x
  3. Step 3: Cross multiply
    61,643.80x = 92,411.70 × 41,858.20
  4. Step 4: Simplify right side
    61,643.80x = 3,868,187,420.94
  5. Step 5: Solve for x
    x = 3,868,187,420.94/61,643.80
  6. Step 6: Final answer
    x = 62,750.63

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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.