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Finding the Fourth Proportional to 69,411.74, 104,101.20 and 39,814.34

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Solution

The fourth proportional to 69,411.74, 104,101.20 and 39,814.34 is: 59,712.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,411.74 : 104,101.20 = 39,814.34 : x
  2. Step 2: Convert to fraction form
    69,411.74/104,101.20 = 39,814.34/x
  3. Step 3: Cross multiply
    69,411.74x = 104,101.20 × 39,814.34
  4. Step 4: Simplify right side
    69,411.74x = 4,144,720,050.70
  5. Step 5: Solve for x
    x = 4,144,720,050.70/69,411.74
  6. Step 6: Final answer
    x = 59,712.09

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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.