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Finding the Fourth Proportional to 111,874.50, 154,389.24 and 61,573.50

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Solution

The fourth proportional to 111,874.50, 154,389.24 and 61,573.50 is: 84,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,874.50 : 154,389.24 = 61,573.50 : x
  2. Step 2: Convert to fraction form
    111,874.50/154,389.24 = 61,573.50/x
  3. Step 3: Cross multiply
    111,874.50x = 154,389.24 × 61,573.50
  4. Step 4: Simplify right side
    111,874.50x = 9,506,285,869.14
  5. Step 5: Solve for x
    x = 9,506,285,869.14/111,874.50
  6. Step 6: Final answer
    x = 84,972.77

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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.