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Finding the Fourth Proportional to 99,909.86, 149,871.63 and 33,347.30

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Solution

The fourth proportional to 99,909.86, 149,871.63 and 33,347.30 is: 50,023.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,909.86 : 149,871.63 = 33,347.30 : x
  2. Step 2: Convert to fraction form
    99,909.86/149,871.63 = 33,347.30/x
  3. Step 3: Cross multiply
    99,909.86x = 149,871.63 × 33,347.30
  4. Step 4: Simplify right side
    99,909.86x = 4,997,814,207.10
  5. Step 5: Solve for x
    x = 4,997,814,207.10/99,909.86
  6. Step 6: Final answer
    x = 50,023.23

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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.