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Finding the Fourth Proportional to 79,358.16, 118,978.92 and 37,834.32

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Solution

The fourth proportional to 79,358.16, 118,978.92 and 37,834.32 is: 56,723.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,358.16 : 118,978.92 = 37,834.32 : x
  2. Step 2: Convert to fraction form
    79,358.16/118,978.92 = 37,834.32/x
  3. Step 3: Cross multiply
    79,358.16x = 118,978.92 × 37,834.32
  4. Step 4: Simplify right side
    79,358.16x = 4,501,486,532.53
  5. Step 5: Solve for x
    x = 4,501,486,532.53/79,358.16
  6. Step 6: Final answer
    x = 56,723.68

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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.