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Finding the Fourth Proportional to 92,620.26, 127,821.85 and 56,805.39

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Solution

The fourth proportional to 92,620.26, 127,821.85 and 56,805.39 is: 78,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,620.26 : 127,821.85 = 56,805.39 : x
  2. Step 2: Convert to fraction form
    92,620.26/127,821.85 = 56,805.39/x
  3. Step 3: Cross multiply
    92,620.26x = 127,821.85 × 56,805.39
  4. Step 4: Simplify right side
    92,620.26x = 7,260,969,897.76
  5. Step 5: Solve for x
    x = 7,260,969,897.76/92,620.26
  6. Step 6: Final answer
    x = 78,395.05

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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.