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Finding the Fourth Proportional to 118,986.67, 164,265.56 and 91,903.05

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Solution

The fourth proportional to 118,986.67, 164,265.56 and 91,903.05 is: 126,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,986.67 : 164,265.56 = 91,903.05 : x
  2. Step 2: Convert to fraction form
    118,986.67/164,265.56 = 91,903.05/x
  3. Step 3: Cross multiply
    118,986.67x = 164,265.56 × 91,903.05
  4. Step 4: Simplify right side
    118,986.67x = 15,096,506,384.62
  5. Step 5: Solve for x
    x = 15,096,506,384.62/118,986.67
  6. Step 6: Final answer
    x = 126,875.61

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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.