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Finding the Fourth Proportional to 170,361.72, 235,109.82 and 93,880.74

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Solution

The fourth proportional to 170,361.72, 235,109.82 and 93,880.74 is: 129,561.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,361.72 : 235,109.82 = 93,880.74 : x
  2. Step 2: Convert to fraction form
    170,361.72/235,109.82 = 93,880.74/x
  3. Step 3: Cross multiply
    170,361.72x = 235,109.82 × 93,880.74
  4. Step 4: Simplify right side
    170,361.72x = 22,072,283,882.87
  5. Step 5: Solve for x
    x = 22,072,283,882.87/170,361.72
  6. Step 6: Final answer
    x = 129,561.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.