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Finding the Fourth Proportional to 72,322.20, 108,410.40 and 32,907.60

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Solution

The fourth proportional to 72,322.20, 108,410.40 and 32,907.60 is: 49,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,322.20 : 108,410.40 = 32,907.60 : x
  2. Step 2: Convert to fraction form
    72,322.20/108,410.40 = 32,907.60/x
  3. Step 3: Cross multiply
    72,322.20x = 108,410.40 × 32,907.60
  4. Step 4: Simplify right side
    72,322.20x = 3,567,526,079.04
  5. Step 5: Solve for x
    x = 3,567,526,079.04/72,322.20
  6. Step 6: Final answer
    x = 49,328.23

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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.