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Finding the Fourth Proportional to 91,956.96, 126,892.44 and 56,133.90

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Solution

The fourth proportional to 91,956.96, 126,892.44 and 56,133.90 is: 77,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,956.96 : 126,892.44 = 56,133.90 : x
  2. Step 2: Convert to fraction form
    91,956.96/126,892.44 = 56,133.90/x
  3. Step 3: Cross multiply
    91,956.96x = 126,892.44 × 56,133.90
  4. Step 4: Simplify right side
    91,956.96x = 7,122,967,537.72
  5. Step 5: Solve for x
    x = 7,122,967,537.72/91,956.96
  6. Step 6: Final answer
    x = 77,459.80

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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.