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Finding the Fourth Proportional to 72,346.40, 108,487.20 and 32,883.20

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Solution

The fourth proportional to 72,346.40, 108,487.20 and 32,883.20 is: 49,310.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,346.40 : 108,487.20 = 32,883.20 : x
  2. Step 2: Convert to fraction form
    72,346.40/108,487.20 = 32,883.20/x
  3. Step 3: Cross multiply
    72,346.40x = 108,487.20 × 32,883.20
  4. Step 4: Simplify right side
    72,346.40x = 3,567,406,295.04
  5. Step 5: Solve for x
    x = 3,567,406,295.04/72,346.40
  6. Step 6: Final answer
    x = 49,310.07

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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.