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Finding the Fourth Proportional to 149,651.70, 206,554.68 and 86,026.40

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Solution

The fourth proportional to 149,651.70, 206,554.68 and 86,026.40 is: 118,736.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,651.70 : 206,554.68 = 86,026.40 : x
  2. Step 2: Convert to fraction form
    149,651.70/206,554.68 = 86,026.40/x
  3. Step 3: Cross multiply
    149,651.70x = 206,554.68 × 86,026.40
  4. Step 4: Simplify right side
    149,651.70x = 17,769,155,523.55
  5. Step 5: Solve for x
    x = 17,769,155,523.55/149,651.70
  6. Step 6: Final answer
    x = 118,736.74

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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.