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Finding the Fourth Proportional to 435,686.30, 653,529.97 and 136,168.45

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Solution

The fourth proportional to 435,686.30, 653,529.97 and 136,168.45 is: 204,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,686.30 : 653,529.97 = 136,168.45 : x
  2. Step 2: Convert to fraction form
    435,686.30/653,529.97 = 136,168.45/x
  3. Step 3: Cross multiply
    435,686.30x = 653,529.97 × 136,168.45
  4. Step 4: Simplify right side
    435,686.30x = 88,990,164,489.99
  5. Step 5: Solve for x
    x = 88,990,164,489.99/435,686.30
  6. Step 6: Final answer
    x = 204,252.84

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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.