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Finding the Fourth Proportional to 193,992.72, 291,060.24 and 81,701.28

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Solution

The fourth proportional to 193,992.72, 291,060.24 and 81,701.28 is: 122,581.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,992.72 : 291,060.24 = 81,701.28 : x
  2. Step 2: Convert to fraction form
    193,992.72/291,060.24 = 81,701.28/x
  3. Step 3: Cross multiply
    193,992.72x = 291,060.24 × 81,701.28
  4. Step 4: Simplify right side
    193,992.72x = 23,779,994,165.11
  5. Step 5: Solve for x
    x = 23,779,994,165.11/193,992.72
  6. Step 6: Final answer
    x = 122,581.89

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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.