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Finding the Fourth Proportional to 136,995.69, 205,510.14 and 48,231.03

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Solution

The fourth proportional to 136,995.69, 205,510.14 and 48,231.03 is: 72,352.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,995.69 : 205,510.14 = 48,231.03 : x
  2. Step 2: Convert to fraction form
    136,995.69/205,510.14 = 48,231.03/x
  3. Step 3: Cross multiply
    136,995.69x = 205,510.14 × 48,231.03
  4. Step 4: Simplify right side
    136,995.69x = 9,911,965,727.64
  5. Step 5: Solve for x
    x = 9,911,965,727.64/136,995.69
  6. Step 6: Final answer
    x = 72,352.39

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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.