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Finding the Fourth Proportional to 29,145.32, 43,654.80 and 18,054.80

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Solution

The fourth proportional to 29,145.32, 43,654.80 and 18,054.80 is: 27,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,145.32 : 43,654.80 = 18,054.80 : x
  2. Step 2: Convert to fraction form
    29,145.32/43,654.80 = 18,054.80/x
  3. Step 3: Cross multiply
    29,145.32x = 43,654.80 × 18,054.80
  4. Step 4: Simplify right side
    29,145.32x = 788,178,683.04
  5. Step 5: Solve for x
    x = 788,178,683.04/29,145.32
  6. Step 6: Final answer
    x = 27,043.06

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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.