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Finding the Fourth Proportional to 61,531.80, 92,103.30 and 48,312.60

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Solution

The fourth proportional to 61,531.80, 92,103.30 and 48,312.60 is: 72,316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,531.80 : 92,103.30 = 48,312.60 : x
  2. Step 2: Convert to fraction form
    61,531.80/92,103.30 = 48,312.60/x
  3. Step 3: Cross multiply
    61,531.80x = 92,103.30 × 48,312.60
  4. Step 4: Simplify right side
    61,531.80x = 4,449,749,891.58
  5. Step 5: Solve for x
    x = 4,449,749,891.58/61,531.80
  6. Step 6: Final answer
    x = 72,316.26

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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.