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Finding the Fourth Proportional to 113,147.98, 156,126.87 and 65,392.11

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Solution

The fourth proportional to 113,147.98, 156,126.87 and 65,392.11 is: 90,231.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,147.98 : 156,126.87 = 65,392.11 : x
  2. Step 2: Convert to fraction form
    113,147.98/156,126.87 = 65,392.11/x
  3. Step 3: Cross multiply
    113,147.98x = 156,126.87 × 65,392.11
  4. Step 4: Simplify right side
    113,147.98x = 10,209,465,457.00
  5. Step 5: Solve for x
    x = 10,209,465,457.00/113,147.98
  6. Step 6: Final answer
    x = 90,231.09

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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.