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Finding the Fourth Proportional to 75,143.51, 103,674.57 and 43,308.08

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Solution

The fourth proportional to 75,143.51, 103,674.57 and 43,308.08 is: 59,751.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,143.51 : 103,674.57 = 43,308.08 : x
  2. Step 2: Convert to fraction form
    75,143.51/103,674.57 = 43,308.08/x
  3. Step 3: Cross multiply
    75,143.51x = 103,674.57 × 43,308.08
  4. Step 4: Simplify right side
    75,143.51x = 4,489,946,571.53
  5. Step 5: Solve for x
    x = 4,489,946,571.53/75,143.51
  6. Step 6: Final answer
    x = 59,751.62

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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.