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Finding the Fourth Proportional to 72,016.60, 108,140.10 and 48,746.20

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Solution

The fourth proportional to 72,016.60, 108,140.10 and 48,746.20 is: 73,197.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,016.60 : 108,140.10 = 48,746.20 : x
  2. Step 2: Convert to fraction form
    72,016.60/108,140.10 = 48,746.20/x
  3. Step 3: Cross multiply
    72,016.60x = 108,140.10 × 48,746.20
  4. Step 4: Simplify right side
    72,016.60x = 5,271,418,942.62
  5. Step 5: Solve for x
    x = 5,271,418,942.62/72,016.60
  6. Step 6: Final answer
    x = 73,197.28

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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.