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Finding the Fourth Proportional to 109,736, 151,435.68 and 59,435.36

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Solution

The fourth proportional to 109,736, 151,435.68 and 59,435.36 is: 82,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,736 : 151,435.68 = 59,435.36 : x
  2. Step 2: Convert to fraction form
    109,736/151,435.68 = 59,435.36/x
  3. Step 3: Cross multiply
    109,736x = 151,435.68 × 59,435.36
  4. Step 4: Simplify right side
    109,736x = 9,000,634,157.64
  5. Step 5: Solve for x
    x = 9,000,634,157.64/109,736
  6. Step 6: Final answer
    x = 82,020.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.