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Finding the Fourth Proportional to 79,702, 109,988.76 and 44,374

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Solution

The fourth proportional to 79,702, 109,988.76 and 44,374 is: 61,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,702 : 109,988.76 = 44,374 : x
  2. Step 2: Convert to fraction form
    79,702/109,988.76 = 44,374/x
  3. Step 3: Cross multiply
    79,702x = 109,988.76 × 44,374
  4. Step 4: Simplify right side
    79,702x = 4,880,641,236.24
  5. Step 5: Solve for x
    x = 4,880,641,236.24/79,702
  6. Step 6: Final answer
    x = 61,236.12

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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.