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Finding the Fourth Proportional to 73,056.66, 109,580.90 and 19,747.86

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Solution

The fourth proportional to 73,056.66, 109,580.90 and 19,747.86 is: 29,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,056.66 : 109,580.90 = 19,747.86 : x
  2. Step 2: Convert to fraction form
    73,056.66/109,580.90 = 19,747.86/x
  3. Step 3: Cross multiply
    73,056.66x = 109,580.90 × 19,747.86
  4. Step 4: Simplify right side
    73,056.66x = 2,163,988,173.13
  5. Step 5: Solve for x
    x = 2,163,988,173.13/73,056.66
  6. Step 6: Final answer
    x = 29,620.68

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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.