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Finding the Fourth Proportional to 74,784.34, 102,992.43 and 73,151.38

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Solution

The fourth proportional to 74,784.34, 102,992.43 and 73,151.38 is: 100,743.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,784.34 : 102,992.43 = 73,151.38 : x
  2. Step 2: Convert to fraction form
    74,784.34/102,992.43 = 73,151.38/x
  3. Step 3: Cross multiply
    74,784.34x = 102,992.43 × 73,151.38
  4. Step 4: Simplify right side
    74,784.34x = 7,534,038,126.57
  5. Step 5: Solve for x
    x = 7,534,038,126.57/74,784.34
  6. Step 6: Final answer
    x = 100,743.53

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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.