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Finding the Fourth Proportional to 113,166.48, 156,177.36 and 65,431.92

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Solution

The fourth proportional to 113,166.48, 156,177.36 and 65,431.92 is: 90,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,166.48 : 156,177.36 = 65,431.92 : x
  2. Step 2: Convert to fraction form
    113,166.48/156,177.36 = 65,431.92/x
  3. Step 3: Cross multiply
    113,166.48x = 156,177.36 × 65,431.92
  4. Step 4: Simplify right side
    113,166.48x = 10,218,984,525.33
  5. Step 5: Solve for x
    x = 10,218,984,525.33/113,166.48
  6. Step 6: Final answer
    x = 90,300.45

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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.