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Finding the Fourth Proportional to 91,712.96, 137,569.44 and 73,361.60

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Solution

The fourth proportional to 91,712.96, 137,569.44 and 73,361.60 is: 110,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,712.96 : 137,569.44 = 73,361.60 : x
  2. Step 2: Convert to fraction form
    91,712.96/137,569.44 = 73,361.60/x
  3. Step 3: Cross multiply
    91,712.96x = 137,569.44 × 73,361.60
  4. Step 4: Simplify right side
    91,712.96x = 10,092,314,229.50
  5. Step 5: Solve for x
    x = 10,092,314,229.50/91,712.96
  6. Step 6: Final answer
    x = 110,042.40

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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.