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Finding the Fourth Proportional to 79,133.76, 118,718.42 and 26,541.90

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Solution

The fourth proportional to 79,133.76, 118,718.42 and 26,541.90 is: 39,818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,133.76 : 118,718.42 = 26,541.90 : x
  2. Step 2: Convert to fraction form
    79,133.76/118,718.42 = 26,541.90/x
  3. Step 3: Cross multiply
    79,133.76x = 118,718.42 × 26,541.90
  4. Step 4: Simplify right side
    79,133.76x = 3,151,012,299.09
  5. Step 5: Solve for x
    x = 3,151,012,299.09/79,133.76
  6. Step 6: Final answer
    x = 39,818.81

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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.