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Finding the Fourth Proportional to 113,729.77, 156,896.32 and 65,955.43

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Solution

The fourth proportional to 113,729.77, 156,896.32 and 65,955.43 is: 90,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,729.77 : 156,896.32 = 65,955.43 : x
  2. Step 2: Convert to fraction form
    113,729.77/156,896.32 = 65,955.43/x
  3. Step 3: Cross multiply
    113,729.77x = 156,896.32 × 65,955.43
  4. Step 4: Simplify right side
    113,729.77x = 10,348,164,251.02
  5. Step 5: Solve for x
    x = 10,348,164,251.02/113,729.77
  6. Step 6: Final answer
    x = 90,989.05

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1.5x scale

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.