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Finding the Fourth Proportional to 114,808.40, 171,905.40 and 73,029.20

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Solution

The fourth proportional to 114,808.40, 171,905.40 and 73,029.20 is: 109,348.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,808.40 : 171,905.40 = 73,029.20 : x
  2. Step 2: Convert to fraction form
    114,808.40/171,905.40 = 73,029.20/x
  3. Step 3: Cross multiply
    114,808.40x = 171,905.40 × 73,029.20
  4. Step 4: Simplify right side
    114,808.40x = 12,554,113,837.68
  5. Step 5: Solve for x
    x = 12,554,113,837.68/114,808.40
  6. Step 6: Final answer
    x = 109,348.39

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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.