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Finding the Fourth Proportional to 74,891.70, 103,367.88 and 43,079.04

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Solution

The fourth proportional to 74,891.70, 103,367.88 and 43,079.04 is: 59,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,891.70 : 103,367.88 = 43,079.04 : x
  2. Step 2: Convert to fraction form
    74,891.70/103,367.88 = 43,079.04/x
  3. Step 3: Cross multiply
    74,891.70x = 103,367.88 × 43,079.04
  4. Step 4: Simplify right side
    74,891.70x = 4,452,989,037.24
  5. Step 5: Solve for x
    x = 4,452,989,037.24/74,891.70
  6. Step 6: Final answer
    x = 59,459.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.