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Finding the Fourth Proportional to 170,361.72, 255,509.64 and 65,156.04

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Solution

The fourth proportional to 170,361.72, 255,509.64 and 65,156.04 is: 97,721.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,361.72 : 255,509.64 = 65,156.04 : x
  2. Step 2: Convert to fraction form
    170,361.72/255,509.64 = 65,156.04/x
  3. Step 3: Cross multiply
    170,361.72x = 255,509.64 × 65,156.04
  4. Step 4: Simplify right side
    170,361.72x = 16,647,996,324.23
  5. Step 5: Solve for x
    x = 16,647,996,324.23/170,361.72
  6. Step 6: Final answer
    x = 97,721.46

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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.