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Finding the Fourth Proportional to 72,449.60, 108,674.40 and 46,205.60

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Solution

The fourth proportional to 72,449.60, 108,674.40 and 46,205.60 is: 69,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,449.60 : 108,674.40 = 46,205.60 : x
  2. Step 2: Convert to fraction form
    72,449.60/108,674.40 = 46,205.60/x
  3. Step 3: Cross multiply
    72,449.60x = 108,674.40 × 46,205.60
  4. Step 4: Simplify right side
    72,449.60x = 5,021,365,856.64
  5. Step 5: Solve for x
    x = 5,021,365,856.64/72,449.60
  6. Step 6: Final answer
    x = 69,308.40

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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.