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Finding the Fourth Proportional to 74,927.60, 103,189.56 and 73,294.64

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Solution

The fourth proportional to 74,927.60, 103,189.56 and 73,294.64 is: 100,940.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,927.60 : 103,189.56 = 73,294.64 : x
  2. Step 2: Convert to fraction form
    74,927.60/103,189.56 = 73,294.64/x
  3. Step 3: Cross multiply
    74,927.60x = 103,189.56 × 73,294.64
  4. Step 4: Simplify right side
    74,927.60x = 7,563,241,651.96
  5. Step 5: Solve for x
    x = 7,563,241,651.96/74,927.60
  6. Step 6: Final answer
    x = 100,940.66

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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.