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Finding the Fourth Proportional to 103,676.76, 143,074.14 and 58,964.76

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Solution

The fourth proportional to 103,676.76, 143,074.14 and 58,964.76 is: 81,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,676.76 : 143,074.14 = 58,964.76 : x
  2. Step 2: Convert to fraction form
    103,676.76/143,074.14 = 58,964.76/x
  3. Step 3: Cross multiply
    103,676.76x = 143,074.14 × 58,964.76
  4. Step 4: Simplify right side
    103,676.76x = 8,436,332,327.31
  5. Step 5: Solve for x
    x = 8,436,332,327.31/103,676.76
  6. Step 6: Final answer
    x = 81,371.49

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Double scale
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1.5x scale

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.