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Finding the Fourth Proportional to 72,225.22, 99,629.04 and 43,525.30

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Solution

The fourth proportional to 72,225.22, 99,629.04 and 43,525.30 is: 60,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,225.22 : 99,629.04 = 43,525.30 : x
  2. Step 2: Convert to fraction form
    72,225.22/99,629.04 = 43,525.30/x
  3. Step 3: Cross multiply
    72,225.22x = 99,629.04 × 43,525.30
  4. Step 4: Simplify right side
    72,225.22x = 4,336,383,854.71
  5. Step 5: Solve for x
    x = 4,336,383,854.71/72,225.22
  6. Step 6: Final answer
    x = 60,039.75

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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.