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Finding the Fourth Proportional to 79,318.53, 118,988.72 and 26,743.05

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Solution

The fourth proportional to 79,318.53, 118,988.72 and 26,743.05 is: 40,118.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,318.53 : 118,988.72 = 26,743.05 : x
  2. Step 2: Convert to fraction form
    79,318.53/118,988.72 = 26,743.05/x
  3. Step 3: Cross multiply
    79,318.53x = 118,988.72 × 26,743.05
  4. Step 4: Simplify right side
    79,318.53x = 3,182,121,154.68
  5. Step 5: Solve for x
    x = 3,182,121,154.68/79,318.53
  6. Step 6: Final answer
    x = 40,118.26

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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.