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Finding the Fourth Proportional to 72,917.04, 109,375.54 and 37,782.88

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Solution

The fourth proportional to 72,917.04, 109,375.54 and 37,782.88 is: 56,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,917.04 : 109,375.54 = 37,782.88 : x
  2. Step 2: Convert to fraction form
    72,917.04/109,375.54 = 37,782.88/x
  3. Step 3: Cross multiply
    72,917.04x = 109,375.54 × 37,782.88
  4. Step 4: Simplify right side
    72,917.04x = 4,132,522,902.76
  5. Step 5: Solve for x
    x = 4,132,522,902.76/72,917.04
  6. Step 6: Final answer
    x = 56,674.31

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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.