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Finding the Fourth Proportional to 70,396.35, 105,332.08 and 69,609.03

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Solution

The fourth proportional to 70,396.35, 105,332.08 and 69,609.03 is: 104,154.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,396.35 : 105,332.08 = 69,609.03 : x
  2. Step 2: Convert to fraction form
    70,396.35/105,332.08 = 69,609.03/x
  3. Step 3: Cross multiply
    70,396.35x = 105,332.08 × 69,609.03
  4. Step 4: Simplify right side
    70,396.35x = 7,332,063,916.68
  5. Step 5: Solve for x
    x = 7,332,063,916.68/70,396.35
  6. Step 6: Final answer
    x = 104,154.04

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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.