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Finding the Fourth Proportional to 101,840.95, 140,540.32 and 56,519.47

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Solution

The fourth proportional to 101,840.95, 140,540.32 and 56,519.47 is: 77,996.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,840.95 : 140,540.32 = 56,519.47 : x
  2. Step 2: Convert to fraction form
    101,840.95/140,540.32 = 56,519.47/x
  3. Step 3: Cross multiply
    101,840.95x = 140,540.32 × 56,519.47
  4. Step 4: Simplify right side
    101,840.95x = 7,943,264,328.43
  5. Step 5: Solve for x
    x = 7,943,264,328.43/101,840.95
  6. Step 6: Final answer
    x = 77,996.77

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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.