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Finding the Fourth Proportional to 64,390.80, 96,613.96 and 34,829.44

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Solution

The fourth proportional to 64,390.80, 96,613.96 and 34,829.44 is: 52,259.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.80 : 96,613.96 = 34,829.44 : x
  2. Step 2: Convert to fraction form
    64,390.80/96,613.96 = 34,829.44/x
  3. Step 3: Cross multiply
    64,390.80x = 96,613.96 × 34,829.44
  4. Step 4: Simplify right side
    64,390.80x = 3,365,010,122.98
  5. Step 5: Solve for x
    x = 3,365,010,122.98/64,390.80
  6. Step 6: Final answer
    x = 52,259.18

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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.