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Finding the Fourth Proportional to 134,672.71, 185,849.60 and 74,245.50

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Solution

The fourth proportional to 134,672.71, 185,849.60 and 74,245.50 is: 102,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,672.71 : 185,849.60 = 74,245.50 : x
  2. Step 2: Convert to fraction form
    134,672.71/185,849.60 = 74,245.50/x
  3. Step 3: Cross multiply
    134,672.71x = 185,849.60 × 74,245.50
  4. Step 4: Simplify right side
    134,672.71x = 13,798,496,476.80
  5. Step 5: Solve for x
    x = 13,798,496,476.80/134,672.71
  6. Step 6: Final answer
    x = 102,459.48

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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.