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Finding the Fourth Proportional to 70,329.44, 105,421.25 and 43,973.66

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Solution

The fourth proportional to 70,329.44, 105,421.25 and 43,973.66 is: 65,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,329.44 : 105,421.25 = 43,973.66 : x
  2. Step 2: Convert to fraction form
    70,329.44/105,421.25 = 43,973.66/x
  3. Step 3: Cross multiply
    70,329.44x = 105,421.25 × 43,973.66
  4. Step 4: Simplify right side
    70,329.44x = 4,635,757,457.30
  5. Step 5: Solve for x
    x = 4,635,757,457.30/70,329.44
  6. Step 6: Final answer
    x = 65,914.90

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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.