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Finding the Fourth Proportional to 105,674.76, 158,519.16 and 39,113.28

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Solution

The fourth proportional to 105,674.76, 158,519.16 and 39,113.28 is: 58,672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,674.76 : 158,519.16 = 39,113.28 : x
  2. Step 2: Convert to fraction form
    105,674.76/158,519.16 = 39,113.28/x
  3. Step 3: Cross multiply
    105,674.76x = 158,519.16 × 39,113.28
  4. Step 4: Simplify right side
    105,674.76x = 6,200,204,290.44
  5. Step 5: Solve for x
    x = 6,200,204,290.44/105,674.76
  6. Step 6: Final answer
    x = 58,672.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.