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Finding the Fourth Proportional to 64,909.20, 97,363.80 and 56,161.20

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Solution

The fourth proportional to 64,909.20, 97,363.80 and 56,161.20 is: 84,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,909.20 : 97,363.80 = 56,161.20 : x
  2. Step 2: Convert to fraction form
    64,909.20/97,363.80 = 56,161.20/x
  3. Step 3: Cross multiply
    64,909.20x = 97,363.80 × 56,161.20
  4. Step 4: Simplify right side
    64,909.20x = 5,468,067,844.56
  5. Step 5: Solve for x
    x = 5,468,067,844.56/64,909.20
  6. Step 6: Final answer
    x = 84,241.80

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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.