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Finding the Fourth Proportional to 79,657.66, 109,930.50 and 43,849.18

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Solution

The fourth proportional to 79,657.66, 109,930.50 and 43,849.18 is: 60,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,657.66 : 109,930.50 = 43,849.18 : x
  2. Step 2: Convert to fraction form
    79,657.66/109,930.50 = 43,849.18/x
  3. Step 3: Cross multiply
    79,657.66x = 109,930.50 × 43,849.18
  4. Step 4: Simplify right side
    79,657.66x = 4,820,362,281.99
  5. Step 5: Solve for x
    x = 4,820,362,281.99/79,657.66
  6. Step 6: Final answer
    x = 60,513.48

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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.