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Finding the Fourth Proportional to 79,781.66, 119,683.42 and 35,407.43

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Solution

The fourth proportional to 79,781.66, 119,683.42 and 35,407.43 is: 53,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,781.66 : 119,683.42 = 35,407.43 : x
  2. Step 2: Convert to fraction form
    79,781.66/119,683.42 = 35,407.43/x
  3. Step 3: Cross multiply
    79,781.66x = 119,683.42 × 35,407.43
  4. Step 4: Simplify right side
    79,781.66x = 4,237,682,315.81
  5. Step 5: Solve for x
    x = 4,237,682,315.81/79,781.66
  6. Step 6: Final answer
    x = 53,116.00

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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.