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Finding the Fourth Proportional to 73,113.16, 109,669.73 and 39,861.19

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Solution

The fourth proportional to 73,113.16, 109,669.73 and 39,861.19 is: 59,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,113.16 : 109,669.73 = 39,861.19 : x
  2. Step 2: Convert to fraction form
    73,113.16/109,669.73 = 39,861.19/x
  3. Step 3: Cross multiply
    73,113.16x = 109,669.73 × 39,861.19
  4. Step 4: Simplify right side
    73,113.16x = 4,371,565,570.95
  5. Step 5: Solve for x
    x = 4,371,565,570.95/73,113.16
  6. Step 6: Final answer
    x = 59,791.77

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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.