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Finding the Fourth Proportional to 74,983.50, 112,530.90 and 35,540.70

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Solution

The fourth proportional to 74,983.50, 112,530.90 and 35,540.70 is: 53,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,983.50 : 112,530.90 = 35,540.70 : x
  2. Step 2: Convert to fraction form
    74,983.50/112,530.90 = 35,540.70/x
  3. Step 3: Cross multiply
    74,983.50x = 112,530.90 × 35,540.70
  4. Step 4: Simplify right side
    74,983.50x = 3,999,426,957.63
  5. Step 5: Solve for x
    x = 3,999,426,957.63/74,983.50
  6. Step 6: Final answer
    x = 53,337.43

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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.