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Finding the Fourth Proportional to 64,894.86, 97,305.84 and 20,532.78

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Solution

The fourth proportional to 64,894.86, 97,305.84 and 20,532.78 is: 30,787.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,894.86 : 97,305.84 = 20,532.78 : x
  2. Step 2: Convert to fraction form
    64,894.86/97,305.84 = 20,532.78/x
  3. Step 3: Cross multiply
    64,894.86x = 97,305.84 × 20,532.78
  4. Step 4: Simplify right side
    64,894.86x = 1,997,959,405.44
  5. Step 5: Solve for x
    x = 1,997,959,405.44/64,894.86
  6. Step 6: Final answer
    x = 30,787.64

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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.