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Finding the Fourth Proportional to 105,609.96, 158,037.48 and 91,733.49

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Solution

The fourth proportional to 105,609.96, 158,037.48 and 91,733.49 is: 137,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,609.96 : 158,037.48 = 91,733.49 : x
  2. Step 2: Convert to fraction form
    105,609.96/158,037.48 = 91,733.49/x
  3. Step 3: Cross multiply
    105,609.96x = 158,037.48 × 91,733.49
  4. Step 4: Simplify right side
    105,609.96x = 14,497,329,591.21
  5. Step 5: Solve for x
    x = 14,497,329,591.21/105,609.96
  6. Step 6: Final answer
    x = 137,272.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.