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Finding the Fourth Proportional to 111,596.50, 154,003.17 and 61,295.50

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Solution

The fourth proportional to 111,596.50, 154,003.17 and 61,295.50 is: 84,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,596.50 : 154,003.17 = 61,295.50 : x
  2. Step 2: Convert to fraction form
    111,596.50/154,003.17 = 61,295.50/x
  3. Step 3: Cross multiply
    111,596.50x = 154,003.17 × 61,295.50
  4. Step 4: Simplify right side
    111,596.50x = 9,439,701,306.74
  5. Step 5: Solve for x
    x = 9,439,701,306.74/111,596.50
  6. Step 6: Final answer
    x = 84,587.79

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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.