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Finding the Fourth Proportional to 75,418.58, 112,955.64 and 36,003.38

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Solution

The fourth proportional to 75,418.58, 112,955.64 and 36,003.38 is: 53,922.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,418.58 : 112,955.64 = 36,003.38 : x
  2. Step 2: Convert to fraction form
    75,418.58/112,955.64 = 36,003.38/x
  3. Step 3: Cross multiply
    75,418.58x = 112,955.64 × 36,003.38
  4. Step 4: Simplify right side
    75,418.58x = 4,066,784,830.06
  5. Step 5: Solve for x
    x = 4,066,784,830.06/75,418.58
  6. Step 6: Final answer
    x = 53,922.85

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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.