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Finding the Fourth Proportional to 91,956.86, 126,914.19 and 56,167.46

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Solution

The fourth proportional to 91,956.86, 126,914.19 and 56,167.46 is: 77,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,956.86 : 126,914.19 = 56,167.46 : x
  2. Step 2: Convert to fraction form
    91,956.86/126,914.19 = 56,167.46/x
  3. Step 3: Cross multiply
    91,956.86x = 126,914.19 × 56,167.46
  4. Step 4: Simplify right side
    91,956.86x = 7,128,447,690.26
  5. Step 5: Solve for x
    x = 7,128,447,690.26/91,956.86
  6. Step 6: Final answer
    x = 77,519.48

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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.