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Finding the Fourth Proportional to 79,930.42, 119,895.42 and 75,058.67

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Solution

The fourth proportional to 79,930.42, 119,895.42 and 75,058.67 is: 112,587.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.42 : 119,895.42 = 75,058.67 : x
  2. Step 2: Convert to fraction form
    79,930.42/119,895.42 = 75,058.67/x
  3. Step 3: Cross multiply
    79,930.42x = 119,895.42 × 75,058.67
  4. Step 4: Simplify right side
    79,930.42x = 8,999,190,764.29
  5. Step 5: Solve for x
    x = 8,999,190,764.29/79,930.42
  6. Step 6: Final answer
    x = 112,587.81

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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.