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Finding the Fourth Proportional to 71,805.54, 99,106.68 and 43,126.53

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Solution

The fourth proportional to 71,805.54, 99,106.68 and 43,126.53 is: 59,523.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,805.54 : 99,106.68 = 43,126.53 : x
  2. Step 2: Convert to fraction form
    71,805.54/99,106.68 = 43,126.53/x
  3. Step 3: Cross multiply
    71,805.54x = 99,106.68 × 43,126.53
  4. Step 4: Simplify right side
    71,805.54x = 4,274,127,208.22
  5. Step 5: Solve for x
    x = 4,274,127,208.22/71,805.54
  6. Step 6: Final answer
    x = 59,523.64

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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.