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Finding the Fourth Proportional to 76,909.62, 106,014.37 and 52,668.66

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Solution

The fourth proportional to 76,909.62, 106,014.37 and 52,668.66 is: 72,599.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,909.62 : 106,014.37 = 52,668.66 : x
  2. Step 2: Convert to fraction form
    76,909.62/106,014.37 = 52,668.66/x
  3. Step 3: Cross multiply
    76,909.62x = 106,014.37 × 52,668.66
  4. Step 4: Simplify right side
    76,909.62x = 5,583,634,808.64
  5. Step 5: Solve for x
    x = 5,583,634,808.64/76,909.62
  6. Step 6: Final answer
    x = 72,599.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.