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Finding the Fourth Proportional to 147,857.70, 221,786.55 and 122,925.90

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Solution

The fourth proportional to 147,857.70, 221,786.55 and 122,925.90 is: 184,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,857.70 : 221,786.55 = 122,925.90 : x
  2. Step 2: Convert to fraction form
    147,857.70/221,786.55 = 122,925.90/x
  3. Step 3: Cross multiply
    147,857.70x = 221,786.55 × 122,925.90
  4. Step 4: Simplify right side
    147,857.70x = 27,263,311,266.65
  5. Step 5: Solve for x
    x = 27,263,311,266.65/147,857.70
  6. Step 6: Final answer
    x = 184,388.85

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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.