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Finding the Fourth Proportional to 239,209.68, 358,865.14 and 70,716.72

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Solution

The fourth proportional to 239,209.68, 358,865.14 and 70,716.72 is: 106,090.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,209.68 : 358,865.14 = 70,716.72 : x
  2. Step 2: Convert to fraction form
    239,209.68/358,865.14 = 70,716.72/x
  3. Step 3: Cross multiply
    239,209.68x = 358,865.14 × 70,716.72
  4. Step 4: Simplify right side
    239,209.68x = 25,377,765,623.14
  5. Step 5: Solve for x
    x = 25,377,765,623.14/239,209.68
  6. Step 6: Final answer
    x = 106,090.04

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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.