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Finding the Fourth Proportional to 70,924.82, 106,390.86 and 18,334.76

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Solution

The fourth proportional to 70,924.82, 106,390.86 and 18,334.76 is: 27,503.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,924.82 : 106,390.86 = 18,334.76 : x
  2. Step 2: Convert to fraction form
    70,924.82/106,390.86 = 18,334.76/x
  3. Step 3: Cross multiply
    70,924.82x = 106,390.86 × 18,334.76
  4. Step 4: Simplify right side
    70,924.82x = 1,950,650,352.34
  5. Step 5: Solve for x
    x = 1,950,650,352.34/70,924.82
  6. Step 6: Final answer
    x = 27,503.07

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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.