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Finding the Fourth Proportional to 64,394.84, 96,618.84 and 28,352.78

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Solution

The fourth proportional to 64,394.84, 96,618.84 and 28,352.78 is: 42,540.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,394.84 : 96,618.84 = 28,352.78 : x
  2. Step 2: Convert to fraction form
    64,394.84/96,618.84 = 28,352.78/x
  3. Step 3: Cross multiply
    64,394.84x = 96,618.84 × 28,352.78
  4. Step 4: Simplify right side
    64,394.84x = 2,739,412,714.38
  5. Step 5: Solve for x
    x = 2,739,412,714.38/64,394.84
  6. Step 6: Final answer
    x = 42,540.87

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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.