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Finding the Fourth Proportional to 75,009.92, 103,505.92 and 43,172.48

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Solution

The fourth proportional to 75,009.92, 103,505.92 and 43,172.48 is: 59,573.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,009.92 : 103,505.92 = 43,172.48 : x
  2. Step 2: Convert to fraction form
    75,009.92/103,505.92 = 43,172.48/x
  3. Step 3: Cross multiply
    75,009.92x = 103,505.92 × 43,172.48
  4. Step 4: Simplify right side
    75,009.92x = 4,468,607,261.08
  5. Step 5: Solve for x
    x = 4,468,607,261.08/75,009.92
  6. Step 6: Final answer
    x = 59,573.55

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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.