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Finding the Fourth Proportional to 79,878.60, 119,834.91 and 23,718.87

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Solution

The fourth proportional to 79,878.60, 119,834.91 and 23,718.87 is: 35,583.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,878.60 : 119,834.91 = 23,718.87 : x
  2. Step 2: Convert to fraction form
    79,878.60/119,834.91 = 23,718.87/x
  3. Step 3: Cross multiply
    79,878.60x = 119,834.91 × 23,718.87
  4. Step 4: Simplify right side
    79,878.60x = 2,842,348,651.75
  5. Step 5: Solve for x
    x = 2,842,348,651.75/79,878.60
  6. Step 6: Final answer
    x = 35,583.36

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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.