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Finding the Fourth Proportional to 52,968.64, 79,451.93 and 21,377.86

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Solution

The fourth proportional to 52,968.64, 79,451.93 and 21,377.86 is: 32,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,968.64 : 79,451.93 = 21,377.86 : x
  2. Step 2: Convert to fraction form
    52,968.64/79,451.93 = 21,377.86/x
  3. Step 3: Cross multiply
    52,968.64x = 79,451.93 × 21,377.86
  4. Step 4: Simplify right side
    52,968.64x = 1,698,512,236.27
  5. Step 5: Solve for x
    x = 1,698,512,236.27/52,968.64
  6. Step 6: Final answer
    x = 32,066.37

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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.