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Finding the Fourth Proportional to 73,214.70, 109,579.05 and 53,167.20

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Solution

The fourth proportional to 73,214.70, 109,579.05 and 53,167.20 is: 79,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,214.70 : 109,579.05 = 53,167.20 : x
  2. Step 2: Convert to fraction form
    73,214.70/109,579.05 = 53,167.20/x
  3. Step 3: Cross multiply
    73,214.70x = 109,579.05 × 53,167.20
  4. Step 4: Simplify right side
    73,214.70x = 5,826,011,267.16
  5. Step 5: Solve for x
    x = 5,826,011,267.16/73,214.70
  6. Step 6: Final answer
    x = 79,574.34

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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.