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Finding the Fourth Proportional to 85,846.13, 128,745.96 and 35,916.01

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Solution

The fourth proportional to 85,846.13, 128,745.96 and 35,916.01 is: 53,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,846.13 : 128,745.96 = 35,916.01 : x
  2. Step 2: Convert to fraction form
    85,846.13/128,745.96 = 35,916.01/x
  3. Step 3: Cross multiply
    85,846.13x = 128,745.96 × 35,916.01
  4. Step 4: Simplify right side
    85,846.13x = 4,624,040,730.27
  5. Step 5: Solve for x
    x = 4,624,040,730.27/85,846.13
  6. Step 6: Final answer
    x = 53,864.29

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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.