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Finding the Fourth Proportional to 73,008.96, 109,638.44 and 45,094.20

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Solution

The fourth proportional to 73,008.96, 109,638.44 and 45,094.20 is: 67,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,008.96 : 109,638.44 = 45,094.20 : x
  2. Step 2: Convert to fraction form
    73,008.96/109,638.44 = 45,094.20/x
  3. Step 3: Cross multiply
    73,008.96x = 109,638.44 × 45,094.20
  4. Step 4: Simplify right side
    73,008.96x = 4,944,057,741.05
  5. Step 5: Solve for x
    x = 4,944,057,741.05/73,008.96
  6. Step 6: Final answer
    x = 67,718.51

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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.