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Finding the Fourth Proportional to 74,098.80, 111,070.44 and 53,310.96

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Solution

The fourth proportional to 74,098.80, 111,070.44 and 53,310.96 is: 79,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,098.80 : 111,070.44 = 53,310.96 : x
  2. Step 2: Convert to fraction form
    74,098.80/111,070.44 = 53,310.96/x
  3. Step 3: Cross multiply
    74,098.80x = 111,070.44 × 53,310.96
  4. Step 4: Simplify right side
    74,098.80x = 5,921,271,784.02
  5. Step 5: Solve for x
    x = 5,921,271,784.02/74,098.80
  6. Step 6: Final answer
    x = 79,910.49

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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.