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Finding the Fourth Proportional to 29,144.64, 43,719.12 and 8,369.76

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Solution

The fourth proportional to 29,144.64, 43,719.12 and 8,369.76 is: 12,555.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,144.64 : 43,719.12 = 8,369.76 : x
  2. Step 2: Convert to fraction form
    29,144.64/43,719.12 = 8,369.76/x
  3. Step 3: Cross multiply
    29,144.64x = 43,719.12 × 8,369.76
  4. Step 4: Simplify right side
    29,144.64x = 365,918,541.81
  5. Step 5: Solve for x
    x = 365,918,541.81/29,144.64
  6. Step 6: Final answer
    x = 12,555.26

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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.