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Finding the Fourth Proportional to 136,599.40, 205,052.70 and 105,572.20

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Solution

The fourth proportional to 136,599.40, 205,052.70 and 105,572.20 is: 158,477.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,599.40 : 205,052.70 = 105,572.20 : x
  2. Step 2: Convert to fraction form
    136,599.40/205,052.70 = 105,572.20/x
  3. Step 3: Cross multiply
    136,599.40x = 205,052.70 × 105,572.20
  4. Step 4: Simplify right side
    136,599.40x = 21,647,864,654.94
  5. Step 5: Solve for x
    x = 21,647,864,654.94/136,599.40
  6. Step 6: Final answer
    x = 158,477.01

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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.