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Finding the Fourth Proportional to 147,845.16, 221,505.02 and 84,662.76

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Solution

The fourth proportional to 147,845.16, 221,505.02 and 84,662.76 is: 126,843.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,845.16 : 221,505.02 = 84,662.76 : x
  2. Step 2: Convert to fraction form
    147,845.16/221,505.02 = 84,662.76/x
  3. Step 3: Cross multiply
    147,845.16x = 221,505.02 × 84,662.76
  4. Step 4: Simplify right side
    147,845.16x = 18,753,226,347.06
  5. Step 5: Solve for x
    x = 18,753,226,347.06/147,845.16
  6. Step 6: Final answer
    x = 126,843.69

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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.