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Finding the Fourth Proportional to 113,731, 156,898.07 and 65,956.66

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Solution

The fourth proportional to 113,731, 156,898.07 and 65,956.66 is: 90,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,731 : 156,898.07 = 65,956.66 : x
  2. Step 2: Convert to fraction form
    113,731/156,898.07 = 65,956.66/x
  3. Step 3: Cross multiply
    113,731x = 156,898.07 × 65,956.66
  4. Step 4: Simplify right side
    113,731x = 10,348,472,327.86
  5. Step 5: Solve for x
    x = 10,348,472,327.86/113,731
  6. Step 6: Final answer
    x = 90,990.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.