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Finding the Fourth Proportional to 73,206.40, 109,809.60 and 48,274.60

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Solution

The fourth proportional to 73,206.40, 109,809.60 and 48,274.60 is: 72,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,206.40 : 109,809.60 = 48,274.60 : x
  2. Step 2: Convert to fraction form
    73,206.40/109,809.60 = 48,274.60/x
  3. Step 3: Cross multiply
    73,206.40x = 109,809.60 × 48,274.60
  4. Step 4: Simplify right side
    73,206.40x = 5,301,014,516.16
  5. Step 5: Solve for x
    x = 5,301,014,516.16/73,206.40
  6. Step 6: Final answer
    x = 72,411.90

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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.