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Finding the Fourth Proportional to 79,062.95, 109,111.70 and 45,539.75

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Solution

The fourth proportional to 79,062.95, 109,111.70 and 45,539.75 is: 62,847.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,062.95 : 109,111.70 = 45,539.75 : x
  2. Step 2: Convert to fraction form
    79,062.95/109,111.70 = 45,539.75/x
  3. Step 3: Cross multiply
    79,062.95x = 109,111.70 × 45,539.75
  4. Step 4: Simplify right side
    79,062.95x = 4,968,919,108.37
  5. Step 5: Solve for x
    x = 4,968,919,108.37/79,062.95
  6. Step 6: Final answer
    x = 62,847.63

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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.