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Finding the Fourth Proportional to 92,436.68, 138,664.74 and 30,112.04

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Solution

The fourth proportional to 92,436.68, 138,664.74 and 30,112.04 is: 45,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,436.68 : 138,664.74 = 30,112.04 : x
  2. Step 2: Convert to fraction form
    92,436.68/138,664.74 = 30,112.04/x
  3. Step 3: Cross multiply
    92,436.68x = 138,664.74 × 30,112.04
  4. Step 4: Simplify right side
    92,436.68x = 4,175,478,197.47
  5. Step 5: Solve for x
    x = 4,175,478,197.47/92,436.68
  6. Step 6: Final answer
    x = 45,171.23

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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.