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Finding the Fourth Proportional to 67,751.66, 93,494.80 and 39,072.53

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Solution

The fourth proportional to 67,751.66, 93,494.80 and 39,072.53 is: 53,918.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,751.66 : 93,494.80 = 39,072.53 : x
  2. Step 2: Convert to fraction form
    67,751.66/93,494.80 = 39,072.53/x
  3. Step 3: Cross multiply
    67,751.66x = 93,494.80 × 39,072.53
  4. Step 4: Simplify right side
    67,751.66x = 3,653,078,377.84
  5. Step 5: Solve for x
    x = 3,653,078,377.84/67,751.66
  6. Step 6: Final answer
    x = 53,918.65

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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.