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Finding the Fourth Proportional to 106,605.62, 147,110.50 and 61,251.50

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Solution

The fourth proportional to 106,605.62, 147,110.50 and 61,251.50 is: 84,524.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,605.62 : 147,110.50 = 61,251.50 : x
  2. Step 2: Convert to fraction form
    106,605.62/147,110.50 = 61,251.50/x
  3. Step 3: Cross multiply
    106,605.62x = 147,110.50 × 61,251.50
  4. Step 4: Simplify right side
    106,605.62x = 9,010,738,790.75
  5. Step 5: Solve for x
    x = 9,010,738,790.75/106,605.62
  6. Step 6: Final answer
    x = 84,524.05

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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.