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Finding the Fourth Proportional to 72,973.68, 109,461.60 and 48,172.56

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Solution

The fourth proportional to 72,973.68, 109,461.60 and 48,172.56 is: 72,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,973.68 : 109,461.60 = 48,172.56 : x
  2. Step 2: Convert to fraction form
    72,973.68/109,461.60 = 48,172.56/x
  3. Step 3: Cross multiply
    72,973.68x = 109,461.60 × 48,172.56
  4. Step 4: Simplify right side
    72,973.68x = 5,273,045,493.70
  5. Step 5: Solve for x
    x = 5,273,045,493.70/72,973.68
  6. Step 6: Final answer
    x = 72,259.55

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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.