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Finding the Fourth Proportional to 72,465.40, 108,698.10 and 48,845.80

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Solution

The fourth proportional to 72,465.40, 108,698.10 and 48,845.80 is: 73,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,465.40 : 108,698.10 = 48,845.80 : x
  2. Step 2: Convert to fraction form
    72,465.40/108,698.10 = 48,845.80/x
  3. Step 3: Cross multiply
    72,465.40x = 108,698.10 × 48,845.80
  4. Step 4: Simplify right side
    72,465.40x = 5,309,445,652.98
  5. Step 5: Solve for x
    x = 5,309,445,652.98/72,465.40
  6. Step 6: Final answer
    x = 73,268.70

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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.