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Finding the Fourth Proportional to 137,855.74, 206,784.70 and 75,492.22

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Solution

The fourth proportional to 137,855.74, 206,784.70 and 75,492.22 is: 113,238.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,855.74 : 206,784.70 = 75,492.22 : x
  2. Step 2: Convert to fraction form
    137,855.74/206,784.70 = 75,492.22/x
  3. Step 3: Cross multiply
    137,855.74x = 206,784.70 × 75,492.22
  4. Step 4: Simplify right side
    137,855.74x = 15,610,636,065.03
  5. Step 5: Solve for x
    x = 15,610,636,065.03/137,855.74
  6. Step 6: Final answer
    x = 113,238.93

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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.