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Finding the Fourth Proportional to 40,051.68, 60,078.72 and 10,469.04

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Solution

The fourth proportional to 40,051.68, 60,078.72 and 10,469.04 is: 15,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,051.68 : 60,078.72 = 10,469.04 : x
  2. Step 2: Convert to fraction form
    40,051.68/60,078.72 = 10,469.04/x
  3. Step 3: Cross multiply
    40,051.68x = 60,078.72 × 10,469.04
  4. Step 4: Simplify right side
    40,051.68x = 628,966,522.83
  5. Step 5: Solve for x
    x = 628,966,522.83/40,051.68
  6. Step 6: Final answer
    x = 15,703.87

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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.