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Finding the Fourth Proportional to 68,212.80, 102,337.70 and 26,070.69

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Solution

The fourth proportional to 68,212.80, 102,337.70 and 26,070.69 is: 39,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,212.80 : 102,337.70 = 26,070.69 : x
  2. Step 2: Convert to fraction form
    68,212.80/102,337.70 = 26,070.69/x
  3. Step 3: Cross multiply
    68,212.80x = 102,337.70 × 26,070.69
  4. Step 4: Simplify right side
    68,212.80x = 2,668,014,705.43
  5. Step 5: Solve for x
    x = 2,668,014,705.43/68,212.80
  6. Step 6: Final answer
    x = 39,113.11

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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.