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Finding the Fourth Proportional to 135,459.90, 186,926.42 and 75,026.94

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Solution

The fourth proportional to 135,459.90, 186,926.42 and 75,026.94 is: 103,532.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,459.90 : 186,926.42 = 75,026.94 : x
  2. Step 2: Convert to fraction form
    135,459.90/186,926.42 = 75,026.94/x
  3. Step 3: Cross multiply
    135,459.90x = 186,926.42 × 75,026.94
  4. Step 4: Simplify right side
    135,459.90x = 14,024,516,922.62
  5. Step 5: Solve for x
    x = 14,024,516,922.62/135,459.90
  6. Step 6: Final answer
    x = 103,532.61

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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.